313226917 has 2 divisors, whose sum is σ = 313226918. Its totient is φ = 313226916.

The previous prime is 313226861. The next prime is 313226923. The reversal of 313226917 is 719622313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 262731681 + 50495236 = 16209^2 + 7106^2 .

It is a cyclic number.

It is not a de Polignac number, because 313226917 - 2⁷ = 313226789 is a prime.

It is a super-2 number, since 2×313226917² = 196222203066649778, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313226117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156613458 + 156613459.

It is an arithmetic number, because the mean of its divisors is an integer number (156613459).

Almost surely, 2^313226917 is an apocalyptic number.

It is an amenable number.

313226917 is a deficient number, since it is larger than the sum of its proper divisors (1).

313226917 is an equidigital number, since it uses as much as digits as its factorization.

313226917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 34.

The square root of 313226917 is about 17698.2179046366. The cubic root of 313226917 is about 679.1301717067.

The spelling of 313226917 in words is "three hundred thirteen million, two hundred twenty-six thousand, nine hundred seventeen".