231329982 has 32 divisors (see below), whose sum is σ = 527560992. Its totient is φ = 66991104.

The previous prime is 231329971. The next prime is 231329983. The reversal of 231329982 is 289923132.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 231329982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231329983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85903 + ... + 88554.

It is an arithmetic number, because the mean of its divisors is an integer number (16486281).

Almost surely, 2^231329982 is an apocalyptic number.

231329982 is an abundant number, since it is smaller than the sum of its proper divisors (296231010).

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

231329982 is a wasteful number, since it uses less digits than its factorization.

231329982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174492.

The product of its digits is 46656, while the sum is 39.

The square root of 231329982 is about 15209.5358903551. The cubic root of 231329982 is about 613.8712696133.

The spelling of 231329982 in words is "two hundred thirty-one million, three hundred twenty-nine thousand, nine hundred eighty-two".