231120234 has 12 divisors (see below), whose sum is σ = 500760546. Its totient is φ = 77040072.

The previous prime is 231120217. The next prime is 231120247. The reversal of 231120234 is 432021132.

It can be written as a sum of positive squares in only one way, i.e., 209525625 + 21594609 = 14475^2 + 4647^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 12840013 = 231120234 / (2 + 3 + 1 + 1 + 2 + 0 + 2 + 3 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6419989 + ... + 6420024.

Almost surely, 2^231120234 is an apocalyptic number.

231120234 is an abundant number, since it is smaller than the sum of its proper divisors (269640312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231120234 is a wasteful number, since it uses less digits than its factorization.

231120234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12840021 (or 12840018 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 231120234 is about 15202.6390472181. The cubic root of 231120234 is about 613.6856801726.

Adding to 231120234 its reverse (432021132), we get a palindrome (663141366).

The spelling of 231120234 in words is "two hundred thirty-one million, one hundred twenty thousand, two hundred thirty-four".