258996231 has 24 divisors (see below), whose sum is σ = 413694960. Its totient is φ = 159196752.

The previous prime is 258996211. The next prime is 258996233. The reversal of 258996231 is 132699852.

258996231 is a `hidden beast` number, since 2 + 589 + 9 + 62 + 3 + 1 = 666.

It is not a de Polignac number, because 258996231 - 2⁶ = 258996167 is a prime.

It is a super-2 number, since 2×258996231² = 134158095344410722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258996233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 301080 + ... + 301938.

It is an arithmetic number, because the mean of its divisors is an integer number (17237290).

Almost surely, 2^258996231 is an apocalyptic number.

258996231 is a deficient number, since it is larger than the sum of its proper divisors (154698729).

258996231 is an frugal number, since it uses more digits than its factorization.

258996231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740 (or 875 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 258996231 is about 16093.3598418727. The cubic root of 258996231 is about 637.4280167858.

The spelling of 258996231 in words is "two hundred fifty-eight million, nine hundred ninety-six thousand, two hundred thirty-one".