231332285 has 8 divisors (see below), whose sum is σ = 278752056. Its totient is φ = 184296960.

The previous prime is 231332281. The next prime is 231332287. The reversal of 231332285 is 582233132.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 26327161 + 205005124 = 5131^2 + 14318^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231332285 - 2² = 231332281 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231332281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94784 + ... + 97193.

It is an arithmetic number, because the mean of its divisors is an integer number (34844007).

Almost surely, 2^231332285 is an apocalyptic number.

It is an amenable number.

231332285 is a deficient number, since it is larger than the sum of its proper divisors (47419771).

231332285 is a wasteful number, since it uses less digits than its factorization.

231332285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192223.

The product of its digits is 8640, while the sum is 29.

The square root of 231332285 is about 15209.6115992487. The cubic root of 231332285 is about 613.8733067334.

The spelling of 231332285 in words is "two hundred thirty-one million, three hundred thirty-two thousand, two hundred eighty-five".