23031131312 has 60 divisors (see below), whose sum is σ = 52172017920. Its totient is φ = 9820315008.

The previous prime is 23031131311. The next prime is 23031131339. The reversal of 23031131312 is 21313113032.

It is not an unprimeable number, because it can be changed into a prime (23031131311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79889 + ... + 229007.

It is an arithmetic number, because the mean of its divisors is an integer number (869533632).

Almost surely, 2^23031131312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23031131312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26086008960).

23031131312 is an abundant number, since it is smaller than the sum of its proper divisors (29140886608).

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

23031131312 is a wasteful number, since it uses less digits than its factorization.

23031131312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149338 (or 149325 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 23031131312 its reverse (21313113032), we get a palindrome (44344244344).

The spelling of 23031131312 in words is "twenty-three billion, thirty-one million, one hundred thirty-one thousand, three hundred twelve".