230431320 has 144 divisors (see below), whose sum is σ = 871238160. Its totient is φ = 52665984.

The previous prime is 230431309. The next prime is 230431321. The reversal of 230431320 is 23134032.

230431320 is a `hidden beast` number, since 230 + 431 + 3 + 2 + 0 = 666.

230431320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 230431293 and 230431302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230431321) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11109 + ... + 24171.

It is an arithmetic number, because the mean of its divisors is an integer number (6050265).

Almost surely, 2^230431320 is an apocalyptic number.

230431320 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 230431320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (435619080).

230431320 is an abundant number, since it is smaller than the sum of its proper divisors (640806840).

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

230431320 is a wasteful number, since it uses less digits than its factorization.

230431320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13094 (or 13080 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 230431320 is about 15179.9644268358. The cubic root of 230431320 is about 613.0753233731.

Adding to 230431320 its reverse (23134032), we get a palindrome (253565352).

The spelling of 230431320 in words is "two hundred thirty million, four hundred thirty-one thousand, three hundred twenty".