313051393 has 2 divisors, whose sum is σ = 313051394. Its totient is φ = 313051392.

The previous prime is 313051381. The next prime is 313051397. The reversal of 313051393 is 393150313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 306145009 + 6906384 = 17497^2 + 2628^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313051393 is a prime.

It is equal to p_16920505 and since 313051393 and 16920505 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (313051397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156525696 + 156525697.

It is an arithmetic number, because the mean of its divisors is an integer number (156525697).

Almost surely, 2^313051393 is an apocalyptic number.

It is an amenable number.

313051393 is a deficient number, since it is larger than the sum of its proper divisors (1).

313051393 is an equidigital number, since it uses as much as digits as its factorization.

313051393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3645, while the sum is 28.

The square root of 313051393 is about 17693.2584053927. The cubic root of 313051393 is about 679.0032925329.

The spelling of 313051393 in words is "three hundred thirteen million, fifty-one thousand, three hundred ninety-three".