231478224 has 40 divisors (see below), whose sum is σ = 600399072. Its totient is φ = 76848000.

The previous prime is 231478213. The next prime is 231478241. The reversal of 231478224 is 422874132.

It is a happy number.

231478224 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 2442 + ... + 21654.

Almost surely, 2^231478224 is an apocalyptic number.

231478224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231478224 is an abundant number, since it is smaller than the sum of its proper divisors (368920848).

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

231478224 is a wasteful number, since it uses less digits than its factorization.

231478224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19475 (or 19469 counting only the distinct ones).

The product of its digits is 21504, while the sum is 33.

The square root of 231478224 is about 15214.4084341127. The cubic root of 231478224 is about 614.0023696004.

The spelling of 231478224 in words is "two hundred thirty-one million, four hundred seventy-eight thousand, two hundred twenty-four".