1631797163831 has 2 divisors, whose sum is σ = 1631797163832. Its totient is φ = 1631797163830.

The previous prime is 1631797163791. The next prime is 1631797163873. The reversal of 1631797163831 is 1383617971361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1631797163831 - 2²⁶ = 1631730054967 is a prime.

It is a super-2 number, since 2×1631797163831² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1631797163881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815898581915 + 815898581916.

It is an arithmetic number, because the mean of its divisors is an integer number (815898581916).

Almost surely, 2^{1631797163831} is an apocalyptic number.

1631797163831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1631797163831 is an equidigital number, since it uses as much as digits as its factorization.

1631797163831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3429216, while the sum is 56.

The spelling of 1631797163831 in words is "one trillion, six hundred thirty-one billion, seven hundred ninety-seven million, one hundred sixty-three thousand, eight hundred thirty-one".