313223173 has 2 divisors, whose sum is σ = 313223174. Its totient is φ = 313223172.

The previous prime is 313223111. The next prime is 313223179. The reversal of 313223173 is 371322313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313219204 + 3969 = 17698^2 + 63^2 .

It is a cyclic number.

It is not a de Polignac number, because 313223173 - 2²¹ = 311126021 is a prime.

It is a super-2 number, since 2×313223173² = 196217512208375858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313223179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156611586 + 156611587.

It is an arithmetic number, because the mean of its divisors is an integer number (156611587).

Almost surely, 2^313223173 is an apocalyptic number.

It is an amenable number.

313223173 is a deficient number, since it is larger than the sum of its proper divisors (1).

313223173 is an equidigital number, since it uses as much as digits as its factorization.

313223173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 25.

The square root of 313223173 is about 17698.1121309591. The cubic root of 313223173 is about 679.1274658159.

Adding to 313223173 its reverse (371322313), we get a palindrome (684545486).

The spelling of 313223173 in words is "three hundred thirteen million, two hundred twenty-three thousand, one hundred seventy-three".