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231112310302120 = 23513463959928187
BaseRepresentation
bin110100100011001000000111…
…001010001010010110101000
31010022022010021021101201121211
4310203020013022022112220
5220243021002414131440
62135311310222442504
766452212332413152
oct6443100712122650
91108263237351554
10231112310302120
11677041a90975a5
1221b07145133434
139bc5a49a04c20
14410dc7738bad2
151babb65430eea
hexd2320728a5a8

231112310302120 has 64 divisors (see below), whose sum is σ = 561212415832320. Its totient is φ = 85149469810944.

The previous prime is 231112310302117. The next prime is 231112310302127. The reversal of 231112310302120 is 21203013211132.

It is a junction number, because it is equal to n+sod(n) for n = 231112310302091 and 231112310302100.

It is not an unprimeable number, because it can be changed into a prime (231112310302127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 479723334 + ... + 480204853.

It is an arithmetic number, because the mean of its divisors is an integer number (8768943997380).

Almost surely, 2231112310302120 is an apocalyptic number.

231112310302120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231112310302120 is an abundant number, since it is smaller than the sum of its proper divisors (330100105530200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231112310302120 is a wasteful number, since it uses less digits than its factorization.

231112310302120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959928674 (or 959928670 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 231112310302120 its reverse (21203013211132), we get a palindrome (252315323513252).

The spelling of 231112310302120 in words is "two hundred thirty-one trillion, one hundred twelve billion, three hundred ten million, three hundred two thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 13 20 26 40 52 65 104 130 260 463 520 926 1852 2315 3704 4630 6019 9260 12038 18520 24076 30095 48152 60190 120380 240760 959928187 1919856374 3839712748 4799640935 7679425496 9599281870 12479066431 19198563740 24958132862 38397127480 49916265724 62395332155 99832531448 124790664310 249581328620 444446750581 499162657240 888893501162 1777787002324 2222233752905 3555574004648 4444467505810 5777807757553 8888935011620 11555615515106 17777870023240 23111231030212 28889038787765 46222462060424 57778077575530 115556155151060 231112310302120