258228831 has 8 divisors (see below), whose sum is σ = 393491584. Its totient is φ = 147559320.

The previous prime is 258228769. The next prime is 258228833. The reversal of 258228831 is 138822852.

It is a happy number.

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

It is not a de Polignac number, because 258228831 - 2⁹ = 258228319 is a prime.

It is a super-2 number, since 2×258228831² = 133364258319253122, which contains 22 as substring.

It is the 16070-th Hogben number.

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 258228831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258228833) by changing a digit.

It is a nontrivial repunit in base 16069.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6148285 + ... + 6148326.

It is an arithmetic number, because the mean of its divisors is an integer number (49186448).

Almost surely, 2^258228831 is an apocalyptic number.

258228831 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

258228831 is a deficient number, since it is larger than the sum of its proper divisors (135262753).

258228831 is a wasteful number, since it uses less digits than its factorization.

258228831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12296621.

The product of its digits is 61440, while the sum is 39.

The square root of 258228831 is about 16069.5000233361. The cubic root of 258228831 is about 636.7978323482.

It can be divided in two parts, 2582 and 28831, that added together give a palindrome (31413).

The spelling of 258228831 in words is "two hundred fifty-eight million, two hundred twenty-eight thousand, eight hundred thirty-one".