23312012022 has 48 divisors (see below), whose sum is σ = 54405602160. Its totient is φ = 7171488576.

The previous prime is 23312011993. The next prime is 23312012039. The reversal of 23312012022 is 22021021332.

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

It is a junction number, because it is equal to n+sod(n) for n = 23312011986 and 23312012004.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 2245668 + ... + 2256024.

It is an arithmetic number, because the mean of its divisors is an integer number (1133450045).

Almost surely, 2^23312012022 is an apocalyptic number.

23312012022 is an abundant number, since it is smaller than the sum of its proper divisors (31093590138).

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

23312012022 is a wasteful number, since it uses less digits than its factorization.

23312012022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19997 (or 19994 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 23312012022 its reverse (22021021332), we get a palindrome (45333033354).

The spelling of 23312012022 in words is "twenty-three billion, three hundred twelve million, twelve thousand, twenty-two".