231241224 has 64 divisors (see below), whose sum is σ = 593006400. Its totient is φ = 75119616.

The previous prime is 231241207. The next prime is 231241247. The reversal of 231241224 is 422142132.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 231241224.

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, 155187 + ... + 156669.

It is an arithmetic number, because the mean of its divisors is an integer number (9265725).

Almost surely, 2^231241224 is an apocalyptic number.

231241224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231241224 is an abundant number, since it is smaller than the sum of its proper divisors (361765176).

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

231241224 is a wasteful number, since it uses less digits than its factorization.

231241224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654 (or 1650 counting only the distinct ones).

The product of its digits is 768, while the sum is 21.

The square root of 231241224 is about 15206.6177699053. The cubic root of 231241224 is about 613.7927483661.

Adding to 231241224 its reverse (422142132), we get a palindrome (653383356).

The spelling of 231241224 in words is "two hundred thirty-one million, two hundred forty-one thousand, two hundred twenty-four".