397431710 has 32 divisors (see below), whose sum is σ = 780978240. Its totient is φ = 144730368.

The previous prime is 397431707. The next prime is 397431733. The reversal of 397431710 is 17134793.

It is a super-2 number, since 2×397431710² = 315903928227048200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11450 + ... + 30429.

It is an arithmetic number, because the mean of its divisors is an integer number (24405570).

Almost surely, 2^397431710 is an apocalyptic number.

397431710 is a deficient number, since it is larger than the sum of its proper divisors (383546530).

397431710 is a wasteful number, since it uses less digits than its factorization.

397431710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41972.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 397431710 is about 19935.6893535187. The cubic root of 397431710 is about 735.2259690541.

The spelling of 397431710 in words is "three hundred ninety-seven million, four hundred thirty-one thousand, seven hundred ten".