326416631 has 2 divisors, whose sum is σ = 326416632. Its totient is φ = 326416630.

The previous prime is 326416603. The next prime is 326416633. The reversal of 326416631 is 136614623.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-326416631 is a prime.

It is a super-2 number, since 2×326416631² = 213095633986780322, which contains 22 as substring.

Together with 326416633, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (326416633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163208315 + 163208316.

It is an arithmetic number, because the mean of its divisors is an integer number (163208316).

Almost surely, 2^326416631 is an apocalyptic number.

326416631 is a deficient number, since it is larger than the sum of its proper divisors (1).

326416631 is an equidigital number, since it uses as much as digits as its factorization.

326416631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 32.

The square root of 326416631 is about 18067.0039298164. The cubic root of 326416631 is about 688.5319421077.

The spelling of 326416631 in words is "three hundred twenty-six million, four hundred sixteen thousand, six hundred thirty-one".