231125664 has 96 divisors (see below), whose sum is σ = 756435456. Its totient is φ = 60030720.

The previous prime is 231125647. The next prime is 231125669. The reversal of 231125664 is 466521132.

231125664 is digitally balanced in base 3, 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 (96).

It is not an unprimeable number, because it can be changed into a prime (231125669) 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, 8242 + ... + 23025.

It is an arithmetic number, because the mean of its divisors is an integer number (7879536).

Almost surely, 2^231125664 is an apocalyptic number.

231125664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231125664 is an abundant number, since it is smaller than the sum of its proper divisors (525309792).

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

231125664 is a wasteful number, since it uses less digits than its factorization.

231125664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31298 (or 31290 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 231125664 is about 15202.8176335836. The cubic root of 231125664 is about 613.6904861663.

Adding to 231125664 its reverse (466521132), we get a palindrome (697646796).

The spelling of 231125664 in words is "two hundred thirty-one million, one hundred twenty-five thousand, six hundred sixty-four".