631512953 has 2 divisors, whose sum is σ = 631512954. Its totient is φ = 631512952.

The previous prime is 631512949. The next prime is 631513039. The reversal of 631512953 is 359215136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 549574249 + 81938704 = 23443^2 + 9052^2 .

It is a cyclic number.

It is not a de Polignac number, because 631512953 - 2² = 631512949 is a prime.

It is not a weakly prime, because it can be changed into another prime (631592953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315756476 + 315756477.

It is an arithmetic number, because the mean of its divisors is an integer number (315756477).

Almost surely, 2^631512953 is an apocalyptic number.

It is an amenable number.

631512953 is a deficient number, since it is larger than the sum of its proper divisors (1).

631512953 is an equidigital number, since it uses as much as digits as its factorization.

631512953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24300, while the sum is 35.

The square root of 631512953 is about 25129.9214682418. The cubic root of 631512953 is about 857.9475813938.

The spelling of 631512953 in words is "six hundred thirty-one million, five hundred twelve thousand, nine hundred fifty-three".