313246397 has 2 divisors, whose sum is σ = 313246398. Its totient is φ = 313246396.

The previous prime is 313246393. The next prime is 313246411. The reversal of 313246397 is 793642313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 291521476 + 21724921 = 17074^2 + 4661^2 .

It is an emirp because it is prime and its reverse (793642313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313246397 - 2² = 313246393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 313246397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313246393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156623198 + 156623199.

It is an arithmetic number, because the mean of its divisors is an integer number (156623199).

Almost surely, 2^313246397 is an apocalyptic number.

It is an amenable number.

313246397 is a deficient number, since it is larger than the sum of its proper divisors (1).

313246397 is an equidigital number, since it uses as much as digits as its factorization.

313246397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 38.

The square root of 313246397 is about 17698.7682339761. The cubic root of 313246397 is about 679.1442500854.

The spelling of 313246397 in words is "three hundred thirteen million, two hundred forty-six thousand, three hundred ninety-seven".