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231130231112123 = 71011912179785501
BaseRepresentation
bin110100100011011000110011…
…010100101000000110111011
31010022100211112012120012101122
4310203120303110220012323
5220243314203131041443
62135323432355535455
766453415406654510
oct6443306324500673
91108324465505348
10231130231112123
1167710864a01382
1221b0a7068ba58b
139bc76446c9a05
144110a97483307
151bac363895968
hexd236335281bb

231130231112123 has 32 divisors (see below), whose sum is σ = 268284249169920. Its totient is φ = 195033366000000.

The previous prime is 231130231112117. The next prime is 231130231112159. The reversal of 231130231112123 is 321211132031132.

It is a cyclic number.

It is not a de Polignac number, because 231130231112123 - 214 = 231130231095739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231130231112092 and 231130231112101.

It is not an unprimeable number, because it can be changed into a prime (231130231112323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 293852873 + ... + 294638373.

It is an arithmetic number, because the mean of its divisors is an integer number (8383882786560).

Almost surely, 2231130231112123 is an apocalyptic number.

231130231112123 is a deficient number, since it is larger than the sum of its proper divisors (37154018057797).

231130231112123 is a wasteful number, since it uses less digits than its factorization.

231130231112123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787979.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 231130231112123 its reverse (321211132031132), we get a palindrome (552341363143255).

The spelling of 231130231112123 in words is "two hundred thirty-one trillion, one hundred thirty billion, two hundred thirty-one million, one hundred twelve thousand, one hundred twenty-three".

Divisors: 1 7 101 191 707 1337 2179 15253 19291 135037 220079 416189 785501 1540553 2913323 5498507 42035089 79335601 150030691 294245623 555349207 1050214837 1711606679 11981246753 15153099791 106071698537 172872274579 326916875689 1210105922053 2288418129823 33018604444589 231130231112123