231327772 has 48 divisors (see below), whose sum is σ = 464933952. Its totient is φ = 99763200.

The previous prime is 231327769. The next prime is 231327773. The reversal of 231327772 is 277723132.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231327773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132618 + ... + 134350.

It is an arithmetic number, because the mean of its divisors is an integer number (9686124).

Almost surely, 2^231327772 is an apocalyptic number.

It is an amenable number.

231327772 is an abundant number, since it is smaller than the sum of its proper divisors (233606180).

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

231327772 is a wasteful number, since it uses less digits than its factorization.

231327772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1918 (or 1916 counting only the distinct ones).

The product of its digits is 24696, while the sum is 34.

The square root of 231327772 is about 15209.4632383921. The cubic root of 231327772 is about 613.8693147437.

The spelling of 231327772 in words is "two hundred thirty-one million, three hundred twenty-seven thousand, seven hundred seventy-two".