231982506 has 96 divisors (see below), whose sum is σ = 600956928. Its totient is φ = 63292320.

The previous prime is 231982477. The next prime is 231982507. The reversal of 231982506 is 605289132.

It is not an unprimeable number, because it can be changed into a prime (231982507) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 254191 + ... + 255101.

It is an arithmetic number, because the mean of its divisors is an integer number (6259968).

Almost surely, 2^231982506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231982506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300478464).

231982506 is an abundant number, since it is smaller than the sum of its proper divisors (368974422).

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

231982506 is a wasteful number, since it uses less digits than its factorization.

231982506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016 (or 1013 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 231982506 is about 15230.9719322176. The cubic root of 231982506 is about 614.4479201770.

The spelling of 231982506 in words is "two hundred thirty-one million, nine hundred eighty-two thousand, five hundred six".