23131110312 has 24 divisors (see below), whose sum is σ = 62646757290. Its totient is φ = 7710370080.

The previous prime is 23131110259. The next prime is 23131110313. The reversal of 23131110312 is 21301113132.

23131110312 is a `hidden beast` number, since 2 + 31 + 311 + 10 + 312 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12332990916 + 10798119396 = 111054^2 + 103914^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (23131110313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 160632639 + ... + 160632782.

Almost surely, 2^23131110312 is an apocalyptic number.

It is an amenable number.

23131110312 is an abundant number, since it is smaller than the sum of its proper divisors (39515646978).

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

23131110312 is a wasteful number, since it uses less digits than its factorization.

23131110312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321265433 (or 321265426 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 23131110312 its reverse (21301113132), we get a palindrome (44432223444).

The spelling of 23131110312 in words is "twenty-three billion, one hundred thirty-one million, one hundred ten thousand, three hundred twelve".