258231 has 4 divisors (see below), whose sum is σ = 344312. Its totient is φ = 172152.

The previous prime is 258211. The next prime is 258233. The reversal of 258231 is 132852.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 258231 - 2¹⁴ = 241847 is a prime.

It is a super-2 number, since 2×258231² = 133366498722, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 258198 and 258207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43036 + ... + 43041.

It is an arithmetic number, because the mean of its divisors is an integer number (86078).

2²⁵⁸²³¹ is an apocalyptic number.

258231 is a deficient number, since it is larger than the sum of its proper divisors (86081).

258231 is an equidigital number, since it uses as much as digits as its factorization.

258231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86080.

The product of its digits is 480, while the sum is 21.

The square root of 258231 is about 508.1643434953. The cubic root of 258231 is about 63.6799615277.

It can be divided in two parts, 25 and 8231, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 258231 in words is "two hundred fifty-eight thousand, two hundred thirty-one".