102664931 has 2 divisors, whose sum is σ = 102664932. Its totient is φ = 102664930.

The previous prime is 102664927. The next prime is 102664949. The reversal of 102664931 is 139466201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102664931 - 2² = 102664927 is a prime.

It is a super-2 number, since 2×102664931² = 21080176114469522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102664531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51332465 + 51332466.

It is an arithmetic number, because the mean of its divisors is an integer number (51332466).

Almost surely, 2^102664931 is an apocalyptic number.

102664931 is a deficient number, since it is larger than the sum of its proper divisors (1).

102664931 is an equidigital number, since it uses as much as digits as its factorization.

102664931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 102664931 is about 10132.3704531566. The cubic root of 102664931 is about 468.2459609413.

The spelling of 102664931 in words is "one hundred two million, six hundred sixty-four thousand, nine hundred thirty-one".