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2023231201220 = 225314423737797
BaseRepresentation
bin11101011100010001111…
…110100001111111000100
321011102022110110011000002
4131130101332201333010
5231122034141414340
64145243134140432
7266113361312465
oct35342176417704
97142273404002
102023231201220
117100582a4139
12288148051718
13118a364b3498
146dcd3d62d6c
153796775b715
hex1d711fa1fc4

2023231201220 has 48 divisors (see below), whose sum is σ = 4386840665088. Its totient is φ = 783008138880.

The previous prime is 2023231201217. The next prime is 2023231201231. The reversal of 2023231201220 is 221021323202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2023231201192 and 2023231201201.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2373362 + ... + 3111158.

It is an arithmetic number, because the mean of its divisors is an integer number (91392513856).

Almost surely, 22023231201220 is an apocalyptic number.

2023231201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2023231201220 is an abundant number, since it is smaller than the sum of its proper divisors (2363609463868).

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

2023231201220 is a wasteful number, since it uses less digits than its factorization.

2023231201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742260 (or 742258 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 2023231201220 its reverse (221021323202), we get a palindrome (2244252524422).

The spelling of 2023231201220 in words is "two trillion, twenty-three billion, two hundred thirty-one million, two hundred one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 620 4423 8846 17692 22115 44230 88460 137113 274226 548452 685565 737797 1371130 1475594 2742260 2951188 3688985 7377970 14755940 22871707 45743414 91486828 114358535 228717070 457434140 3263276131 6526552262 13053104524 16316380655 32632761310 65265522620 101161560061 202323120122 404646240244 505807800305 1011615600610 2023231201220