631625023 has 2 divisors, whose sum is σ = 631625024. Its totient is φ = 631625022.

The previous prime is 631624993. The next prime is 631625041. The reversal of 631625023 is 320526136.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 631625023 - 2²⁹ = 94754111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 631624982 and 631625000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631625053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315812511 + 315812512.

It is an arithmetic number, because the mean of its divisors is an integer number (315812512).

Almost surely, 2^631625023 is an apocalyptic number.

631625023 is a deficient number, since it is larger than the sum of its proper divisors (1).

631625023 is an equidigital number, since it uses as much as digits as its factorization.

631625023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 631625023 is about 25132.1511813056. The cubic root of 631625023 is about 857.9983296262.

The spelling of 631625023 in words is "six hundred thirty-one million, six hundred twenty-five thousand, twenty-three".