23011020131 has 16 divisors (see below), whose sum is σ = 26329950720. Its totient is φ = 19920653280.

The previous prime is 23011020127. The next prime is 23011020143. The reversal of 23011020131 is 13102011032.

It is not a de Polignac number, because 23011020131 - 2² = 23011020127 is a prime.

It is a super-2 number, since 2×23011020131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23011020161) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 582341 + ... + 620598.

It is an arithmetic number, because the mean of its divisors is an integer number (1645621920).

Almost surely, 2^23011020131 is an apocalyptic number.

23011020131 is a deficient number, since it is larger than the sum of its proper divisors (3318930589).

23011020131 is a wasteful number, since it uses less digits than its factorization.

23011020131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203034.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 23011020131 its reverse (13102011032), we get a palindrome (36113031163).

Subtracting from 23011020131 its reverse (13102011032), we obtain a palindrome (9909009099).

The spelling of 23011020131 in words is "twenty-three billion, eleven million, twenty thousand, one hundred thirty-one".