7213456631 has 2 divisors, whose sum is σ = 7213456632. Its totient is φ = 7213456630.

The previous prime is 7213456603. The next prime is 7213456637. The reversal of 7213456631 is 1366543127.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7213456631 - 2²² = 7209262327 is a prime.

It is a super-2 number, since 2×7213456631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7213456637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3606728315 + 3606728316.

It is an arithmetic number, because the mean of its divisors is an integer number (3606728316).

Almost surely, 2^7213456631 is an apocalyptic number.

7213456631 is a deficient number, since it is larger than the sum of its proper divisors (1).

7213456631 is an equidigital number, since it uses as much as digits as its factorization.

7213456631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 38.

The square root of 7213456631 is about 84932.0706859311. The cubic root of 7213456631 is about 1932.1810052035.

Adding to 7213456631 its reverse (1366543127), we get a palindrome (8579999758).

The spelling of 7213456631 in words is "seven billion, two hundred thirteen million, four hundred fifty-six thousand, six hundred thirty-one".