7312631 has 2 divisors, whose sum is σ = 7312632. Its totient is φ = 7312630.

The previous prime is 7312583. The next prime is 7312633. The reversal of 7312631 is 1362137.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7312631 is a prime.

It is a super-2 number, since 2×7312631² = 106949144284322, which contains 22 as substring.

Together with 7312633, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 7312597 and 7312606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7312633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3656315 + 3656316.

It is an arithmetic number, because the mean of its divisors is an integer number (3656316).

Almost surely, 2^7312631 is an apocalyptic number.

7312631 is a deficient number, since it is larger than the sum of its proper divisors (1).

7312631 is an equidigital number, since it uses as much as digits as its factorization.

7312631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756, while the sum is 23.

The square root of 7312631 is about 2704.1876783981. The cubic root of 7312631 is about 194.0995609700.

Adding to 7312631 its reverse (1362137), we get a palindrome (8674768).

The spelling of 7312631 in words is "seven million, three hundred twelve thousand, six hundred thirty-one".