231348528 has 40 divisors (see below), whose sum is σ = 664057200. Its totient is φ = 77116032.

The previous prime is 231348517. The next prime is 231348569. The reversal of 231348528 is 825843132.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 231348492 and 231348501.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267333 + ... + 268196.

It is an arithmetic number, because the mean of its divisors is an integer number (16601430).

Almost surely, 2^231348528 is an apocalyptic number.

It is an amenable number.

231348528 is an abundant number, since it is smaller than the sum of its proper divisors (432708672).

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

231348528 is a wasteful number, since it uses less digits than its factorization.

231348528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535546 (or 535534 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 231348528 is about 15210.1455614337. The cubic root of 231348528 is about 613.8876741050.

The spelling of 231348528 in words is "two hundred thirty-one million, three hundred forty-eight thousand, five hundred twenty-eight".