397065313 has 2 divisors, whose sum is σ = 397065314. Its totient is φ = 397065312.

The previous prime is 397065281. The next prime is 397065359. The reversal of 397065313 is 313560793.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 382867489 + 14197824 = 19567^2 + 3768^2 .

It is a cyclic number.

It is not a de Polignac number, because 397065313 - 2⁵ = 397065281 is a prime.

It is not a weakly prime, because it can be changed into another prime (397062313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198532656 + 198532657.

It is an arithmetic number, because the mean of its divisors is an integer number (198532657).

Almost surely, 2^397065313 is an apocalyptic number.

It is an amenable number.

397065313 is a deficient number, since it is larger than the sum of its proper divisors (1).

397065313 is an equidigital number, since it uses as much as digits as its factorization.

397065313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51030, while the sum is 37.

The square root of 397065313 is about 19926.4977605198. The cubic root of 397065313 is about 734.9999617443. Note that the first 4 decimals are identical.

The spelling of 397065313 in words is "three hundred ninety-seven million, sixty-five thousand, three hundred thirteen".