397831713 has 16 divisors (see below), whose sum is σ = 554532480. Its totient is φ = 253218944.

The previous prime is 397831663. The next prime is 397831723. The reversal of 397831713 is 317138793.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397831713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397831723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34195 + ... + 44327.

It is an arithmetic number, because the mean of its divisors is an integer number (34658280).

Almost surely, 2^397831713 is an apocalyptic number.

It is an amenable number.

397831713 is a deficient number, since it is larger than the sum of its proper divisors (156700767).

397831713 is a wasteful number, since it uses less digits than its factorization.

397831713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10728.

The product of its digits is 95256, while the sum is 42.

The square root of 397831713 is about 19945.7191647732. The cubic root of 397831713 is about 735.4725472510.

The spelling of 397831713 in words is "three hundred ninety-seven million, eight hundred thirty-one thousand, seven hundred thirteen".