313444393 has 2 divisors, whose sum is σ = 313444394. Its totient is φ = 313444392.

The previous prime is 313444357. The next prime is 313444399. The reversal of 313444393 is 393444313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253350889 + 60093504 = 15917^2 + 7752^2 .

It is a cyclic number.

It is not a de Polignac number, because 313444393 - 2¹⁷ = 313313321 is a prime.

It is not a weakly prime, because it can be changed into another prime (313444399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156722196 + 156722197.

It is an arithmetic number, because the mean of its divisors is an integer number (156722197).

Almost surely, 2^313444393 is an apocalyptic number.

It is an amenable number.

313444393 is a deficient number, since it is larger than the sum of its proper divisors (1).

313444393 is an equidigital number, since it uses as much as digits as its factorization.

313444393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 34.

The square root of 313444393 is about 17704.3608469778. The cubic root of 313444393 is about 679.2873105482.

The spelling of 313444393 in words is "three hundred thirteen million, four hundred forty-four thousand, three hundred ninety-three".