313844942393 has 2 divisors, whose sum is σ = 313844942394. Its totient is φ = 313844942392.

The previous prime is 313844942347. The next prime is 313844942399. The reversal of 313844942393 is 393249448313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 288167123344 + 25677819049 = 536812^2 + 160243^2 .

It is a cyclic number.

It is not a de Polignac number, because 313844942393 - 2⁸ = 313844942137 is a prime.

It is not a weakly prime, because it can be changed into another prime (313844942399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156922471196 + 156922471197.

It is an arithmetic number, because the mean of its divisors is an integer number (156922471197).

Almost surely, 2^313844942393 is an apocalyptic number.

It is an amenable number.

313844942393 is a deficient number, since it is larger than the sum of its proper divisors (1).

313844942393 is an equidigital number, since it uses as much as digits as its factorization.

313844942393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6718464, while the sum is 53.

The spelling of 313844942393 in words is "three hundred thirteen billion, eight hundred forty-four million, nine hundred forty-two thousand, three hundred ninety-three".