231322032 has 30 divisors (see below), whose sum is σ = 647380812. Its totient is φ = 77107296.

The previous prime is 231322019. The next prime is 231322037. The reversal of 231322032 is 230223132.

It is a happy number.

231322032 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 = 231321996 and 231322014.

It is not an unprimeable number, because it can be changed into a prime (231322037) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 803058 + ... + 803345.

Almost surely, 2^231322032 is an apocalyptic number.

It is an amenable number.

231322032 is an abundant number, since it is smaller than the sum of its proper divisors (416058780).

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

231322032 is a wasteful number, since it uses less digits than its factorization.

231322032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606417 (or 1606408 counting only the distinct ones).

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

The square root of 231322032 is about 15209.2745389121. The cubic root of 231322032 is about 613.8642373320.

Adding to 231322032 its reverse (230223132), we get a palindrome (461545164).

The spelling of 231322032 in words is "two hundred thirty-one million, three hundred twenty-two thousand, thirty-two".