231203328 has 40 divisors (see below), whose sum is σ = 615944208. Its totient is φ = 77067264.

The previous prime is 231203327. The next prime is 231203333. The reversal of 231203328 is 823302132.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 231203298 and 231203307.

It is not an unprimeable number, because it can be changed into a prime (231203327) 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, 73726 + ... + 76797.

Almost surely, 2^231203328 is an apocalyptic number.

It is an amenable number.

231203328 is an abundant number, since it is smaller than the sum of its proper divisors (384740880).

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

231203328 is an equidigital number, since it uses as much as digits as its factorization.

231203328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150544 (or 150528 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 231203328 is about 15205.3716824022. The cubic root of 231203328 is about 613.7592169159.

The spelling of 231203328 in words is "two hundred thirty-one million, two hundred three thousand, three hundred twenty-eight".