631264013957 has 2 divisors, whose sum is σ = 631264013958. Its totient is φ = 631264013956.

The previous prime is 631264013873. The next prime is 631264014013. The reversal of 631264013957 is 759310462136.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 614657568001 + 16606445956 = 784001^2 + 128866^2 .

It is a cyclic number.

It is not a de Polignac number, because 631264013957 - 2¹⁸ = 631263751813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631264013657) 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, 315632006978 + 315632006979.

It is an arithmetic number, because the mean of its divisors is an integer number (315632006979).

Almost surely, 2^631264013957 is an apocalyptic number.

It is an amenable number.

631264013957 is a deficient number, since it is larger than the sum of its proper divisors (1).

631264013957 is an equidigital number, since it uses as much as digits as its factorization.

631264013957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 47.

The spelling of 631264013957 in words is "six hundred thirty-one billion, two hundred sixty-four million, thirteen thousand, nine hundred fifty-seven".