231030320 has 20 divisors (see below), whose sum is σ = 537145680. Its totient is φ = 92412096.

The previous prime is 231030313. The next prime is 231030337. The reversal of 231030320 is 23030132.

231030320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 231030295 and 231030304.

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, 1443860 + ... + 1444019.

It is an arithmetic number, because the mean of its divisors is an integer number (26857284).

Almost surely, 2^231030320 is an apocalyptic number.

231030320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231030320 is an abundant number, since it is smaller than the sum of its proper divisors (306115360).

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

231030320 is a wasteful number, since it uses less digits than its factorization.

231030320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887892 (or 2887886 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 231030320 is about 15199.6815756120. The cubic root of 231030320 is about 613.6060879904.

Adding to 231030320 its reverse (23030132), we get a palindrome (254060452).

The spelling of 231030320 in words is "two hundred thirty-one million, thirty thousand, three hundred twenty".