397331 has 8 divisors (see below), whose sum is σ = 444528. Its totient is φ = 352000.

The previous prime is 397303. The next prime is 397337. The reversal of 397331 is 133793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-397331 is a prime.

It is a super-2 number, since 2×397331² = 315743847122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 397331.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 397331.

It is not an unprimeable number, because it can be changed into a prime (397337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11 + ... + 891.

It is an arithmetic number, because the mean of its divisors is an integer number (55566).

2³⁹⁷³³¹ is an apocalyptic number.

397331 is a deficient number, since it is larger than the sum of its proper divisors (47197).

397331 is a wasteful number, since it uses less digits than its factorization.

397331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933.

The product of its digits is 1701, while the sum is 26.

The square root of 397331 is about 630.3419706794. The cubic root of 397331 is about 73.5163861225.

It can be divided in two parts, 3973 and 31, that added together give a palindrome (4004).

The spelling of 397331 in words is "three hundred ninety-seven thousand, three hundred thirty-one".