1397331 has 20 divisors (see below), whose sum is σ = 2249632. Its totient is φ = 859248.

The previous prime is 1397329. The next prime is 1397339. The reversal of 1397331 is 1337931.

It is not a de Polignac number, because 1397331 - 2¹ = 1397329 is a prime.

It is a super-2 number, since 2×1397331² = 3905067847122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1397295 and 1397304.

It is not an unprimeable number, because it can be changed into a prime (1397339) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 390 + ... + 1716.

2^1397331 is an apocalyptic number.

1397331 is a deficient number, since it is larger than the sum of its proper divisors (852301).

1397331 is a wasteful number, since it uses less digits than its factorization.

1397331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352 (or 1343 counting only the distinct ones).

The product of its digits is 1701, while the sum is 27.

The square root of 1397331 is about 1182.0875602086. The cubic root of 1397331 is about 111.7977589655.

It can be divided in two parts, 1397 and 331, that added together give a cube (1728 = 12³).

The spelling of 1397331 in words is "one million, three hundred ninety-seven thousand, three hundred thirty-one".