231304120 has 16 divisors (see below), whose sum is σ = 520434360. Its totient is φ = 92521632.

The previous prime is 231304111. The next prime is 231304189. The reversal of 231304120 is 21403132.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 231304094 and 231304103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2891262 + ... + 2891341.

Almost surely, 2^231304120 is an apocalyptic number.

231304120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231304120 is an abundant number, since it is smaller than the sum of its proper divisors (289130240).

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

231304120 is a wasteful number, since it uses less digits than its factorization.

231304120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5782614 (or 5782610 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 231304120 is about 15208.6856762838. The cubic root of 231304120 is about 613.8483924369.

Adding to 231304120 its reverse (21403132), we get a palindrome (252707252).

The spelling of 231304120 in words is "two hundred thirty-one million, three hundred four thousand, one hundred twenty".