23313210021 has 16 divisors (see below), whose sum is σ = 36039745920. Its totient is φ = 14866394400.

The previous prime is 23313210013. The next prime is 23313210029. The reversal of 23313210021 is 12001231332.

It is an interprime number because it is at equal distance from previous prime (23313210013) and next prime (23313210029).

It is not a de Polignac number, because 23313210021 - 2³ = 23313210013 is a prime.

It is a super-2 number, since 2×23313210021² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23313209976 and 23313210003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23313210029) 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 15 ways as a sum of consecutive naturals, for example, 18770080 + ... + 18771321.

It is an arithmetic number, because the mean of its divisors is an integer number (2252484120).

Almost surely, 2^23313210021 is an apocalyptic number.

It is an amenable number.

23313210021 is a deficient number, since it is larger than the sum of its proper divisors (12726535899).

23313210021 is a wasteful number, since it uses less digits than its factorization.

23313210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37541433 (or 37541427 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23313210021 its reverse (12001231332), we get a palindrome (35314441353).

The spelling of 23313210021 in words is "twenty-three billion, three hundred thirteen million, two hundred ten thousand, twenty-one".