438255231 has 16 divisors (see below), whose sum is σ = 587874144. Its totient is φ = 290409984.

The previous prime is 438255211. The next prime is 438255247. The reversal of 438255231 is 132552834.

It is not a de Polignac number, because 438255231 - 2⁵ = 438255199 is a prime.

It is a super-2 number, since 2×438255231² = 384135294997726722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 438255192 and 438255201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438255211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 510955 + ... + 511811.

It is an arithmetic number, because the mean of its divisors is an integer number (36742134).

Almost surely, 2^438255231 is an apocalyptic number.

438255231 is a deficient number, since it is larger than the sum of its proper divisors (149618913).

438255231 is a wasteful number, since it uses less digits than its factorization.

438255231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690.

The product of its digits is 28800, while the sum is 33.

The square root of 438255231 is about 20934.5463528590. The cubic root of 438255231 is about 759.5838158790.

The spelling of 438255231 in words is "four hundred thirty-eight million, two hundred fifty-five thousand, two hundred thirty-one".