231357628 has 12 divisors (see below), whose sum is σ = 411513592. Its totient is φ = 113782320.

The previous prime is 231357613. The next prime is 231357631. The reversal of 231357628 is 826753132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473850 + ... + 474337.

Almost surely, 2^231357628 is an apocalyptic number.

It is an amenable number.

231357628 is a deficient number, since it is larger than the sum of its proper divisors (180155964).

231357628 is a wasteful number, since it uses less digits than its factorization.

231357628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948252 (or 948250 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 231357628 is about 15210.4447009284. Note that the first 3 decimals coincide. The cubic root of 231357628 is about 613.8957230066.

The spelling of 231357628 in words is "two hundred thirty-one million, three hundred fifty-seven thousand, six hundred twenty-eight".