231403552 has 24 divisors (see below), whose sum is σ = 475384896. Its totient is φ = 110670912.

The previous prime is 231403517. The next prime is 231403559. The reversal of 231403552 is 255304132.

It is not an unprimeable number, because it can be changed into a prime (231403559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156468 + ... + 157939.

It is an arithmetic number, because the mean of its divisors is an integer number (19807704).

Almost surely, 2^231403552 is an apocalyptic number.

It is an amenable number.

231403552 is an abundant number, since it is smaller than the sum of its proper divisors (243981344).

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

231403552 is a wasteful number, since it uses less digits than its factorization.

231403552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314440 (or 314432 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 231403552 is about 15211.9542465786. The cubic root of 231403552 is about 613.9363393203.

Adding to 231403552 its reverse (255304132), we get a palindrome (486707684).

The spelling of 231403552 in words is "two hundred thirty-one million, four hundred three thousand, five hundred fifty-two".