398231 has 8 divisors (see below), whose sum is σ = 419520. Its totient is φ = 377568.

The previous prime is 398227. The next prime is 398249. The reversal of 398231 is 132893.

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 398231 - 2² = 398227 is a prime.

It is a super-2 number, since 2×398231² = 317175858722, 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 398231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398261) 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, 1625 + ... + 1853.

It is an arithmetic number, because the mean of its divisors is an integer number (52440).

2³⁹⁸²³¹ is an apocalyptic number.

398231 is a deficient number, since it is larger than the sum of its proper divisors (21289).

398231 is a wasteful number, since it uses less digits than its factorization.

398231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313.

The product of its digits is 1296, while the sum is 26.

The square root of 398231 is about 631.0554650742. The cubic root of 398231 is about 73.5718519292.

The spelling of 398231 in words is "three hundred ninety-eight thousand, two hundred thirty-one".