231748428 has 24 divisors (see below), whose sum is σ = 548155888. Its totient is φ = 76190976.

The previous prime is 231748421. The next prime is 231748463. The reversal of 231748428 is 824847132.

It is not an unprimeable number, because it can be changed into a prime (231748421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131401 + ... + 133152.

Almost surely, 2^231748428 is an apocalyptic number.

It is an amenable number.

231748428 is an abundant number, since it is smaller than the sum of its proper divisors (316407460).

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

231748428 is a wasteful number, since it uses less digits than its factorization.

231748428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264633 (or 264631 counting only the distinct ones).

The product of its digits is 86016, while the sum is 39.

The square root of 231748428 is about 15223.2857162966. The cubic root of 231748428 is about 614.2411845544.

The spelling of 231748428 in words is "two hundred thirty-one million, seven hundred forty-eight thousand, four hundred twenty-eight".