631464511 has 2 divisors, whose sum is σ = 631464512. Its totient is φ = 631464510.

The previous prime is 631464479. The next prime is 631464521. The reversal of 631464511 is 115464136.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 631464511 - 2⁵ = 631464479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631464521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315732255 + 315732256.

It is an arithmetic number, because the mean of its divisors is an integer number (315732256).

Almost surely, 2^631464511 is an apocalyptic number.

631464511 is a deficient number, since it is larger than the sum of its proper divisors (1).

631464511 is an equidigital number, since it uses as much as digits as its factorization.

631464511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 631464511 is about 25128.9576186518. The cubic root of 631464511 is about 857.9256437285.

The spelling of 631464511 in words is "six hundred thirty-one million, four hundred sixty-four thousand, five hundred eleven".