18227424231 has 24 divisors (see below), whose sum is σ = 26778440000. Its totient is φ = 11945299392.

The previous prime is 18227424209. The next prime is 18227424253. The reversal of 18227424231 is 13242472281.

18227424231 is a `hidden beast` number, since 1 + 8 + 227 + 4 + 2 + 423 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (18227424209) and next prime (18227424253).

It is not a de Polignac number, because 18227424231 - 2⁵ = 18227424199 is a prime.

It is a super-2 number, since 2×18227424231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18227428231) 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, 106845 + ... + 218793.

Almost surely, 2^18227424231 is an apocalyptic number.

18227424231 is a deficient number, since it is larger than the sum of its proper divisors (8551015769).

18227424231 is a wasteful number, since it uses less digits than its factorization.

18227424231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112263 (or 112260 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The spelling of 18227424231 in words is "eighteen billion, two hundred twenty-seven million, four hundred twenty-four thousand, two hundred thirty-one".