231248628 has 48 divisors (see below), whose sum is σ = 645655360. Its totient is φ = 71152992.

The previous prime is 231248609. The next prime is 231248657. The reversal of 231248628 is 826842132.

231248628 is a `hidden beast` number, since 2 + 3 + 1 + 24 + 8 + 628 = 666.

231248628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 231248592 and 231248601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80950 + ... + 83757.

Almost surely, 2^231248628 is an apocalyptic number.

It is an amenable number.

231248628 is an abundant number, since it is smaller than the sum of its proper divisors (414406732).

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

231248628 is a wasteful number, since it uses less digits than its factorization.

231248628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164733 (or 164725 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 231248628 is about 15206.8612145965. The cubic root of 231248628 is about 613.7992992064.

The spelling of 231248628 in words is "two hundred thirty-one million, two hundred forty-eight thousand, six hundred twenty-eight".