23271613615931 has 2 divisors, whose sum is σ = 23271613615932. Its totient is φ = 23271613615930.

The previous prime is 23271613615919. The next prime is 23271613615933. The reversal of 23271613615931 is 13951631617232.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23271613615931 is a prime.

It is a super-2 number, since 2×23271613615931² (a number of 28 digits) contains 22 as substring.

Together with 23271613615933, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23271613615931.

It is not a weakly prime, because it can be changed into another prime (23271613615933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11635806807965 + 11635806807966.

It is an arithmetic number, because the mean of its divisors is an integer number (11635806807966).

Almost surely, 2^{23271613615931} is an apocalyptic number.

23271613615931 is a deficient number, since it is larger than the sum of its proper divisors (1).

23271613615931 is an equidigital number, since it uses as much as digits as its factorization.

23271613615931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 50.

The spelling of 23271613615931 in words is "twenty-three trillion, two hundred seventy-one billion, six hundred thirteen million, six hundred fifteen thousand, nine hundred thirty-one".