231987552 has 48 divisors (see below), whose sum is σ = 611190720. Its totient is φ = 77046912.

The previous prime is 231987551. The next prime is 231987571. The reversal of 231987552 is 255789132.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231987551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22899 + ... + 31437.

It is an arithmetic number, because the mean of its divisors is an integer number (12733140).

Almost surely, 2^231987552 is an apocalyptic number.

It is an amenable number.

231987552 is an abundant number, since it is smaller than the sum of its proper divisors (379203168).

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

231987552 is a wasteful number, since it uses less digits than its factorization.

231987552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8835 (or 8827 counting only the distinct ones).

The product of its digits is 151200, while the sum is 42.

The square root of 231987552 is about 15231.1375806274. The cubic root of 231987552 is about 614.4523752280.

The spelling of 231987552 in words is "two hundred thirty-one million, nine hundred eighty-seven thousand, five hundred fifty-two".