231233860 has 96 divisors (see below), whose sum is σ = 574584192. Its totient is φ = 77061120.

The previous prime is 231233801. The next prime is 231233903. The reversal of 231233860 is 68332132.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 666207 + ... + 666553.

It is an arithmetic number, because the mean of its divisors is an integer number (5985252).

Almost surely, 2^231233860 is an apocalyptic number.

231233860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231233860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287292096).

231233860 is an abundant number, since it is smaller than the sum of its proper divisors (343350332).

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

231233860 is a wasteful number, since it uses less digits than its factorization.

231233860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613 (or 611 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 231233860 is about 15206.3756365546. The cubic root of 231233860 is about 613.7862327778.

Adding to 231233860 its reverse (68332132), we get a palindrome (299565992).

The spelling of 231233860 in words is "two hundred thirty-one million, two hundred thirty-three thousand, eight hundred sixty".