231645332 has 24 divisors (see below), whose sum is σ = 431645760. Its totient is φ = 108394880.

The previous prime is 231645329. The next prime is 231645341. The reversal of 231645332 is 233546132.

It is a junction number, because it is equal to n+sod(n) for n = 231645295 and 231645304.

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, 2657 + ... + 21687.

It is an arithmetic number, because the mean of its divisors is an integer number (17985240).

Almost surely, 2^231645332 is an apocalyptic number.

It is an amenable number.

231645332 is a deficient number, since it is larger than the sum of its proper divisors (200000428).

231645332 is a wasteful number, since it uses less digits than its factorization.

231645332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19231 (or 19229 counting only the distinct ones).

The product of its digits is 12960, while the sum is 29.

The square root of 231645332 is about 15219.8992112300. The cubic root of 231645332 is about 614.1500869183.

The spelling of 231645332 in words is "two hundred thirty-one million, six hundred forty-five thousand, three hundred thirty-two".