631056623 has 2 divisors, whose sum is σ = 631056624. Its totient is φ = 631056622.

The previous prime is 631056599. The next prime is 631056641. The reversal of 631056623 is 326650136.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 631056623 - 2¹⁰ = 631055599 is a prime.

It is a super-2 number, since 2×631056623² = 796464922864328258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 631056623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631056653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315528311 + 315528312.

It is an arithmetic number, because the mean of its divisors is an integer number (315528312).

Almost surely, 2^631056623 is an apocalyptic number.

631056623 is a deficient number, since it is larger than the sum of its proper divisors (1).

631056623 is an equidigital number, since it uses as much as digits as its factorization.

631056623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 631056623 is about 25120.8404118971. The cubic root of 631056623 is about 857.7408811952.

The spelling of 631056623 in words is "six hundred thirty-one million, fifty-six thousand, six hundred twenty-three".