663936131 has 2 divisors, whose sum is σ = 663936132. Its totient is φ = 663936130.

The previous prime is 663936109. The next prime is 663936149. The reversal of 663936131 is 131639366.

663936131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 663936131 - 2⁶ = 663936067 is a prime.

It is a super-2 number, since 2×663936131² = 881622372094498322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (663936431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331968065 + 331968066.

It is an arithmetic number, because the mean of its divisors is an integer number (331968066).

Almost surely, 2^663936131 is an apocalyptic number.

663936131 is a deficient number, since it is larger than the sum of its proper divisors (1).

663936131 is an equidigital number, since it uses as much as digits as its factorization.

663936131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 38.

The square root of 663936131 is about 25766.9581246992. The cubic root of 663936131 is about 872.3861613969.

The spelling of 663936131 in words is "six hundred sixty-three million, nine hundred thirty-six thousand, one hundred thirty-one".