231328552 has 48 divisors (see below), whose sum is σ = 536790240. Its totient is φ = 91510848.

The previous prime is 231328547. The next prime is 231328561. The reversal of 231328552 is 255823132.

231328552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2758 + ... + 21685.

It is an arithmetic number, because the mean of its divisors is an integer number (11183130).

Almost surely, 2^231328552 is an apocalyptic number.

It is an amenable number.

231328552 is an abundant number, since it is smaller than the sum of its proper divisors (305461688).

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

231328552 is a wasteful number, since it uses less digits than its factorization.

231328552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24482 (or 24465 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 231328552 is about 15209.4888803010. The cubic root of 231328552 is about 613.8700046991.

It can be divided in two parts, 23132 and 8552, that added together give a square (31684 = 178²).

The spelling of 231328552 in words is "two hundred thirty-one million, three hundred twenty-eight thousand, five hundred fifty-two".