7216631 has 2 divisors, whose sum is σ = 7216632. Its totient is φ = 7216630.

The previous prime is 7216613. The next prime is 7216633. The reversal of 7216631 is 1366127.

Together with previous prime (7216613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7216631 - 2⁶ = 7216567 is a prime.

It is a super-2 number, since 2×7216631² = 104159525980322, which contains 22 as substring.

Together with 7216633, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7216631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7216633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3608315 + 3608316.

It is an arithmetic number, because the mean of its divisors is an integer number (3608316).

Almost surely, 2^7216631 is an apocalyptic number.

7216631 is a deficient number, since it is larger than the sum of its proper divisors (1).

7216631 is an equidigital number, since it uses as much as digits as its factorization.

7216631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 26.

The square root of 7216631 is about 2686.3787893743. The cubic root of 7216631 is about 193.2464390193.

The spelling of 7216631 in words is "seven million, two hundred sixteen thousand, six hundred thirty-one".