231302232 has 96 divisors (see below), whose sum is σ = 718099200. Its totient is φ = 65886912.

The previous prime is 231302213. The next prime is 231302293. The reversal of 231302232 is 232203132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 275269 + ... + 276107.

It is an arithmetic number, because the mean of its divisors is an integer number (7480200).

Almost surely, 2^231302232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231302232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359049600).

231302232 is an abundant number, since it is smaller than the sum of its proper divisors (486796968).

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

231302232 is a wasteful number, since it uses less digits than its factorization.

231302232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405 (or 1398 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 231302232 is about 15208.6236063623. The cubic root of 231302232 is about 613.8467222707.

Adding to 231302232 its reverse (232203132), we get a palindrome (463505364).

The spelling of 231302232 in words is "two hundred thirty-one million, three hundred two thousand, two hundred thirty-two".