231332424 has 16 divisors (see below), whose sum is σ = 578331120. Its totient is φ = 77110800.

The previous prime is 231332417. The next prime is 231332477. The reversal of 231332424 is 424233132.

231332424 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 9638851 = 231332424 / (2 + 3 + 1 + 3 + 3 + 2 + 4 + 2 + 4).

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

It is a junction number, because it is equal to n+sod(n) for n = 231332394 and 231332403.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4819402 + ... + 4819449.

It is an arithmetic number, because the mean of its divisors is an integer number (36145695).

Almost surely, 2^231332424 is an apocalyptic number.

231332424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231332424 is an abundant number, since it is smaller than the sum of its proper divisors (346998696).

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

231332424 is a wasteful number, since it uses less digits than its factorization.

231332424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9638860 (or 9638856 counting only the distinct ones).

The product of its digits is 3456, while the sum is 24.

The square root of 231332424 is about 15209.6161687269. The cubic root of 231332424 is about 613.8734296855.

Adding to 231332424 its reverse (424233132), we get a palindrome (655565556).

The spelling of 231332424 in words is "two hundred thirty-one million, three hundred thirty-two thousand, four hundred twenty-four".