313423217 has 2 divisors, whose sum is σ = 313423218. Its totient is φ = 313423216.

The previous prime is 313423171. The next prime is 313423247. The reversal of 313423217 is 712324313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169806961 + 143616256 = 13031^2 + 11984^2 .

It is a cyclic number.

It is not a de Polignac number, because 313423217 - 2¹² = 313419121 is a prime.

It is a super-2 number, since 2×313423217² = 196468225909258178, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (313423247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156711608 + 156711609.

It is an arithmetic number, because the mean of its divisors is an integer number (156711609).

Almost surely, 2^313423217 is an apocalyptic number.

It is an amenable number.

313423217 is a deficient number, since it is larger than the sum of its proper divisors (1).

313423217 is an equidigital number, since it uses as much as digits as its factorization.

313423217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 26.

The square root of 313423217 is about 17703.7627921298. The cubic root of 313423217 is about 679.2720128725.

The spelling of 313423217 in words is "three hundred thirteen million, four hundred twenty-three thousand, two hundred seventeen".