23131232012 has 24 divisors (see below), whose sum is σ = 46481729280. Its totient is φ = 9866399760.

The previous prime is 23131231993. The next prime is 23131232027. The reversal of 23131232012 is 21023213132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1951712 + ... + 1963527.

It is an arithmetic number, because the mean of its divisors is an integer number (1936738720).

Almost surely, 2^23131232012 is an apocalyptic number.

It is an amenable number.

23131232012 is an abundant number, since it is smaller than the sum of its proper divisors (23350497268).

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

23131232012 is a wasteful number, since it uses less digits than its factorization.

23131232012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3915461 (or 3915459 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 23131232012 its reverse (21023213132), we get a palindrome (44154445144).

The spelling of 23131232012 in words is "twenty-three billion, one hundred thirty-one million, two hundred thirty-two thousand, twelve".