631396793 has 2 divisors, whose sum is σ = 631396794. Its totient is φ = 631396792.

The previous prime is 631396789. The next prime is 631396807. The reversal of 631396793 is 397693136.

631396793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 626851369 + 4545424 = 25037^2 + 2132^2 .

It is a cyclic number.

It is not a de Polignac number, because 631396793 - 2² = 631396789 is a prime.

It is not a weakly prime, because it can be changed into another prime (631396723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315698396 + 315698397.

It is an arithmetic number, because the mean of its divisors is an integer number (315698397).

Almost surely, 2^631396793 is an apocalyptic number.

It is an amenable number.

631396793 is a deficient number, since it is larger than the sum of its proper divisors (1).

631396793 is an equidigital number, since it uses as much as digits as its factorization.

631396793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 551124, while the sum is 47.

The square root of 631396793 is about 25127.6101728756. The cubic root of 631396793 is about 857.8949747652.

The spelling of 631396793 in words is "six hundred thirty-one million, three hundred ninety-six thousand, seven hundred ninety-three".