231919764 has 24 divisors (see below), whose sum is σ = 564674880. Its totient is φ = 73945344.

The previous prime is 231919717. The next prime is 231919781. The reversal of 231919764 is 467919132.

231919764 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 419869 + ... + 420420.

It is an arithmetic number, because the mean of its divisors is an integer number (23528120).

Almost surely, 2^231919764 is an apocalyptic number.

It is an amenable number.

231919764 is an abundant number, since it is smaller than the sum of its proper divisors (332755116).

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

231919764 is a wasteful number, since it uses less digits than its factorization.

231919764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840319 (or 840317 counting only the distinct ones).

The product of its digits is 81648, while the sum is 42.

The square root of 231919764 is about 15228.9121082236. The cubic root of 231919764 is about 614.3925206439.

The spelling of 231919764 in words is "two hundred thirty-one million, nine hundred nineteen thousand, seven hundred sixty-four".