23112313021 has 32 divisors (see below), whose sum is σ = 27183974400. Its totient is φ = 19242256320.

The previous prime is 23112313001. The next prime is 23112313057. The reversal of 23112313021 is 12031321132.

It is not a de Polignac number, because 23112313021 - 2⁷ = 23112312893 is a prime.

It is a super-2 number, since 2×23112313021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23112313021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23112313001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31106376 + ... + 31107118.

It is an arithmetic number, because the mean of its divisors is an integer number (849499200).

Almost surely, 2^23112313021 is an apocalyptic number.

It is an amenable number.

23112313021 is a deficient number, since it is larger than the sum of its proper divisors (4071661379).

23112313021 is a wasteful number, since it uses less digits than its factorization.

23112313021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 23112313021 its reverse (12031321132), we get a palindrome (35143634153).

The spelling of 23112313021 in words is "twenty-three billion, one hundred twelve million, three hundred thirteen thousand, twenty-one".