23928406229531 has 2 divisors, whose sum is σ = 23928406229532. Its totient is φ = 23928406229530.

The previous prime is 23928406229509. The next prime is 23928406229537. The reversal of 23928406229531 is 13592260482932.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23928406229531 - 2²² = 23928402035227 is a prime.

It is a super-2 number, since 2×23928406229531² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23928406229537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11964203114765 + 11964203114766.

It is an arithmetic number, because the mean of its divisors is an integer number (11964203114766).

Almost surely, 2^{23928406229531} is an apocalyptic number.

23928406229531 is a deficient number, since it is larger than the sum of its proper divisors (1).

23928406229531 is an equidigital number, since it uses as much as digits as its factorization.

23928406229531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11197440, while the sum is 56.

The spelling of 23928406229531 in words is "twenty-three trillion, nine hundred twenty-eight billion, four hundred six million, two hundred twenty-nine thousand, five hundred thirty-one".