631197812023 has 2 divisors, whose sum is σ = 631197812024. Its totient is φ = 631197812022.

The previous prime is 631197812009. The next prime is 631197812027. The reversal of 631197812023 is 320218791136.

631197812023 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 a de Polignac number, because none of the positive numbers 2^k-631197812023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631197812027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315598906011 + 315598906012.

It is an arithmetic number, because the mean of its divisors is an integer number (315598906012).

Almost surely, 2^631197812023 is an apocalyptic number.

631197812023 is a deficient number, since it is larger than the sum of its proper divisors (1).

631197812023 is an equidigital number, since it uses as much as digits as its factorization.

631197812023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 631197812023 in words is "six hundred thirty-one billion, one hundred ninety-seven million, eight hundred twelve thousand, twenty-three".