7318631 has 2 divisors, whose sum is σ = 7318632. Its totient is φ = 7318630.

The previous prime is 7318627. The next prime is 7318681. The reversal of 7318631 is 1368137.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7318631 - 2² = 7318627 is a prime.

It is a super-2 number, since 2×7318631² = 107124719428322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 7318594 and 7318603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7318601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3659315 + 3659316.

It is an arithmetic number, because the mean of its divisors is an integer number (3659316).

Almost surely, 2^7318631 is an apocalyptic number.

7318631 is a deficient number, since it is larger than the sum of its proper divisors (1).

7318631 is an equidigital number, since it uses as much as digits as its factorization.

7318631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 29.

The square root of 7318631 is about 2705.2968413836. The cubic root of 7318631 is about 194.1526325660.

The spelling of 7318631 in words is "seven million, three hundred eighteen thousand, six hundred thirty-one".