23031522513031 has 16 divisors (see below), whose sum is σ = 24639477276960. Its totient is φ = 21451728384000.

The previous prime is 23031522512969. The next prime is 23031522513161. The reversal of 23031522513031 is 13031522513032.

It is a cyclic number.

It is not a de Polignac number, because 23031522513031 - 2³¹ = 23029375029383 is a prime.

It is a super-2 number, since 2×23031522513031² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23031522512984 and 23031522513002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23031522513431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23009865 + ... + 23989933.

It is an arithmetic number, because the mean of its divisors is an integer number (1539967329810).

Almost surely, 2^{23031522513031} is an apocalyptic number.

23031522513031 is a deficient number, since it is larger than the sum of its proper divisors (1607954763929).

23031522513031 is a wasteful number, since it uses less digits than its factorization.

23031522513031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994434.

The product of its (nonzero) digits is 16200, while the sum is 31.

Subtracting from 23031522513031 its reverse (13031522513032), we obtain a palindrome (9999999999999).

The spelling of 23031522513031 in words is "twenty-three trillion, thirty-one billion, five hundred twenty-two million, five hundred thirteen thousand, thirty-one".