23201112312 has 96 divisors (see below), whose sum is σ = 74969614800. Its totient is φ = 6628886208.

The previous prime is 23201112301. The next prime is 23201112313. The reversal of 23201112312 is 21321110232.

23201112312 is a `hidden beast` number, since 2 + 320 + 111 + 231 + 2 = 666.

It is a super-2 number, since 2×23201112312² (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23201112313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1085463 + ... + 1106630.

Almost surely, 2^23201112312 is an apocalyptic number.

It is an amenable number.

23201112312 is an abundant number, since it is smaller than the sum of its proper divisors (51768502488).

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

23201112312 is a wasteful number, since it uses less digits than its factorization.

23201112312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192122 (or 2192105 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 23201112312 its reverse (21321110232), we get a palindrome (44522222544).

The spelling of 23201112312 in words is "twenty-three billion, two hundred one million, one hundred twelve thousand, three hundred twelve".