313112249 has 2 divisors, whose sum is σ = 313112250. Its totient is φ = 313112248.

The previous prime is 313112161. The next prime is 313112251. The reversal of 313112249 is 942211313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191407225 + 121705024 = 13835^2 + 11032^2 .

It is a cyclic number.

It is not a de Polignac number, because 313112249 - 2²⁴ = 296335033 is a prime.

It is a Sophie Germain prime.

Together with 313112251, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (313112269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156556124 + 156556125.

It is an arithmetic number, because the mean of its divisors is an integer number (156556125).

Almost surely, 2^313112249 is an apocalyptic number.

It is an amenable number.

313112249 is a deficient number, since it is larger than the sum of its proper divisors (1).

313112249 is an equidigital number, since it uses as much as digits as its factorization.

313112249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

The square root of 313112249 is about 17694.9780728884. The cubic root of 313112249 is about 679.0472882345.

The spelling of 313112249 in words is "three hundred thirteen million, one hundred twelve thousand, two hundred forty-nine".