23130131021 has 16 divisors (see below), whose sum is σ = 23665305600. Its totient is φ = 22600183488.

The previous prime is 23130130981. The next prime is 23130131039. The reversal of 23130131021 is 12013103132.

It is a cyclic number.

It is not a de Polignac number, because 23130131021 - 2³⁰ = 22056389197 is a prime.

It is a super-2 number, since 2×23130131021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23130131041) 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, 7161635 + ... + 7164863.

It is an arithmetic number, because the mean of its divisors is an integer number (1479081600).

Almost surely, 2^23130131021 is an apocalyptic number.

It is an amenable number.

23130131021 is a deficient number, since it is larger than the sum of its proper divisors (535174579).

23130131021 is a wasteful number, since it uses less digits than its factorization.

23130131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3988.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 23130131021 its reverse (12013103132), we get a palindrome (35143234153).

The spelling of 23130131021 in words is "twenty-three billion, one hundred thirty million, one hundred thirty-one thousand, twenty-one".