231875340956 has 24 divisors (see below), whose sum is σ = 464640827616. Its totient is φ = 99184400640.

The previous prime is 231875340911. The next prime is 231875340967. The reversal of 231875340956 is 659043578132.

It is a happy number.

It is a super-2 number, since 2×231875340956² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231875340898 and 231875340907.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 7932881 + ... + 7962056.

It is an arithmetic number, because the mean of its divisors is an integer number (19360034484).

It is a 2-persistent number, because it is pandigital, and so is 2⋅231875340956 = 463750681912, but 3⋅231875340956 = 695626022868 is not.

Almost surely, 2^231875340956 is an apocalyptic number.

It is an amenable number.

231875340956 is an abundant number, since it is smaller than the sum of its proper divisors (232765486660).

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

231875340956 is a wasteful number, since it uses less digits than its factorization.

231875340956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15895469 (or 15895467 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 53.

The spelling of 231875340956 in words is "two hundred thirty-one billion, eight hundred seventy-five million, three hundred forty thousand, nine hundred fifty-six".