631097863933 has 2 divisors, whose sum is σ = 631097863934. Its totient is φ = 631097863932.

The previous prime is 631097863873. The next prime is 631097863943. The reversal of 631097863933 is 339368790136.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 581403200004 + 49694663929 = 762498^2 + 222923^2 .

It is a cyclic number.

It is not a de Polignac number, because 631097863933 - 2¹³ = 631097855741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631097863943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315548931966 + 315548931967.

It is an arithmetic number, because the mean of its divisors is an integer number (315548931967).

Almost surely, 2^631097863933 is an apocalyptic number.

It is an amenable number.

631097863933 is a deficient number, since it is larger than the sum of its proper divisors (1).

631097863933 is an equidigital number, since it uses as much as digits as its factorization.

631097863933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13226976, while the sum is 58.

The spelling of 631097863933 in words is "six hundred thirty-one billion, ninety-seven million, eight hundred sixty-three thousand, nine hundred thirty-three".