23320990131 has 4 divisors (see below), whose sum is σ = 31094653512. Its totient is φ = 15547326752.

The previous prime is 23320990123. The next prime is 23320990151. The reversal of 23320990131 is 13109902332.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23320990131 - 2³ = 23320990123 is a prime.

It is a super-2 number, since 2×23320990131² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23320990092 and 23320990101.

It is not an unprimeable number, because it can be changed into a prime (23320990151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3886831686 + ... + 3886831691.

It is an arithmetic number, because the mean of its divisors is an integer number (7773663378).

Almost surely, 2^23320990131 is an apocalyptic number.

23320990131 is a deficient number, since it is larger than the sum of its proper divisors (7773663381).

23320990131 is an equidigital number, since it uses as much as digits as its factorization.

23320990131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7773663380.

The product of its (nonzero) digits is 8748, while the sum is 33.

The spelling of 23320990131 in words is "twenty-three billion, three hundred twenty million, nine hundred ninety thousand, one hundred thirty-one".