23107949531 has 2 divisors, whose sum is σ = 23107949532. Its totient is φ = 23107949530.

The previous prime is 23107949521. The next prime is 23107949647. The reversal of 23107949531 is 13594970132.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23107949531 is a prime.

It is a super-2 number, since 2×23107949531² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23107949521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11553974765 + 11553974766.

It is an arithmetic number, because the mean of its divisors is an integer number (11553974766).

Almost surely, 2^23107949531 is an apocalyptic number.

23107949531 is a deficient number, since it is larger than the sum of its proper divisors (1).

23107949531 is an equidigital number, since it uses as much as digits as its factorization.

23107949531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 44.

The spelling of 23107949531 in words is "twenty-three billion, one hundred seven million, nine hundred forty-nine thousand, five hundred thirty-one".