231433244 has 12 divisors (see below), whose sum is σ = 462866544. Its totient is φ = 99185664.

The previous prime is 231433231. The next prime is 231433247. The reversal of 231433244 is 442334132.

231433244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

231433244 is an admirable number.

It is a super-2 number, since 2×231433244² = 107122692856727072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231433247) 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, 4132709 + ... + 4132764.

It is an arithmetic number, because the mean of its divisors is an integer number (38572212).

Almost surely, 2^231433244 is an apocalyptic number.

It is an amenable number.

231433244 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

231433244 is a wasteful number, since it uses less digits than its factorization.

231433244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8265484 (or 8265482 counting only the distinct ones).

The product of its digits is 6912, while the sum is 26.

The square root of 231433244 is about 15212.9301582568. The cubic root of 231433244 is about 613.9625967942.

Adding to 231433244 its reverse (442334132), we get a palindrome (673767376).

The spelling of 231433244 in words is "two hundred thirty-one million, four hundred thirty-three thousand, two hundred forty-four".