23131062187 has 2 divisors, whose sum is σ = 23131062188. Its totient is φ = 23131062186.

The previous prime is 23131062161. The next prime is 23131062203. The reversal of 23131062187 is 78126013132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23131062187 - 2²³ = 23122673579 is a prime.

It is a super-2 number, since 2×23131062187² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23131062287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11565531093 + 11565531094.

It is an arithmetic number, because the mean of its divisors is an integer number (11565531094).

Almost surely, 2^23131062187 is an apocalyptic number.

23131062187 is a deficient number, since it is larger than the sum of its proper divisors (1).

23131062187 is an equidigital number, since it uses as much as digits as its factorization.

23131062187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The spelling of 23131062187 in words is "twenty-three billion, one hundred thirty-one million, sixty-two thousand, one hundred eighty-seven".