397319113 has 2 divisors, whose sum is σ = 397319114. Its totient is φ = 397319112.

The previous prime is 397319099. The next prime is 397319123. The reversal of 397319113 is 311913793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 356907664 + 40411449 = 18892^2 + 6357^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397319113 is a prime.

It is not a weakly prime, because it can be changed into another prime (397319123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198659556 + 198659557.

It is an arithmetic number, because the mean of its divisors is an integer number (198659557).

Almost surely, 2^397319113 is an apocalyptic number.

It is an amenable number.

397319113 is a deficient number, since it is larger than the sum of its proper divisors (1).

397319113 is an equidigital number, since it uses as much as digits as its factorization.

397319113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15309, while the sum is 37.

The square root of 397319113 is about 19932.8651477905. The cubic root of 397319113 is about 735.1565298226.

The spelling of 397319113 in words is "three hundred ninety-seven million, three hundred nineteen thousand, one hundred thirteen".