331397 has 8 divisors (see below), whose sum is σ = 369792. Its totient is φ = 294400.

The previous prime is 331391. The next prime is 331399. The reversal of 331397 is 793133.

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

It is a cyclic number.

It is not a de Polignac number, because 331397 - 2⁶ = 331333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 331397.

It is not an unprimeable number, because it can be changed into a prime (331391) 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, 197 + ... + 837.

It is an arithmetic number, because the mean of its divisors is an integer number (46224).

2³³¹³⁹⁷ is an apocalyptic number.

It is an amenable number.

331397 is a deficient number, since it is larger than the sum of its proper divisors (38395).

331397 is a wasteful number, since it uses less digits than its factorization.

331397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699.

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

The square root of 331397 is about 575.6709129355. The cubic root of 331397 is about 69.2016087701.

The spelling of 331397 in words is "three hundred thirty-one thousand, three hundred ninety-seven".