258023931 has 8 divisors (see below), whose sum is σ = 375307584. Its totient is φ = 156378120.

The previous prime is 258023929. The next prime is 258023939. The reversal of 258023931 is 139320852.

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

It is not a de Polignac number, because 258023931 - 2¹ = 258023929 is a prime.

It is a super-2 number, since 2×258023931² = 133152697937385522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 7818907 = 258023931 / (2 + 5 + 8 + 0 + 2 + 3 + 9 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 258023892 and 258023901.

It is not an unprimeable number, because it can be changed into a prime (258023939) 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, 3909421 + ... + 3909486.

It is an arithmetic number, because the mean of its divisors is an integer number (46913448).

Almost surely, 2^258023931 is an apocalyptic number.

258023931 is a deficient number, since it is larger than the sum of its proper divisors (117283653).

258023931 is a wasteful number, since it uses less digits than its factorization.

258023931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7818921.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 258023931 is about 16063.1233264269. The cubic root of 258023931 is about 636.6293585160.

The spelling of 258023931 in words is "two hundred fifty-eight million, twenty-three thousand, nine hundred thirty-one".