662931631 has 2 divisors, whose sum is σ = 662931632. Its totient is φ = 662931630.

The previous prime is 662931623. The next prime is 662931637. The reversal of 662931631 is 136139266.

662931631 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 not a de Polignac number, because 662931631 - 2³ = 662931623 is a prime.

It is a super-2 number, since 2×662931631² = 878956694760640322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (662931637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331465815 + 331465816.

It is an arithmetic number, because the mean of its divisors is an integer number (331465816).

Almost surely, 2^662931631 is an apocalyptic number.

662931631 is a deficient number, since it is larger than the sum of its proper divisors (1).

662931631 is an equidigital number, since it uses as much as digits as its factorization.

662931631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 37.

The square root of 662931631 is about 25747.4587289697. The cubic root of 662931631 is about 871.9459814018.

The spelling of 662931631 in words is "six hundred sixty-two million, nine hundred thirty-one thousand, six hundred thirty-one".