231113872 has 120 divisors (see below), whose sum is σ = 531702080. Its totient is φ = 96940800.

The previous prime is 231113851. The next prime is 231113893. The reversal of 231113872 is 278311132.

It is an interprime number because it is at equal distance from previous prime (231113851) and next prime (231113893).

It is a self number, because there is not a number n which added to its sum of digits gives 231113872.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2243773 + ... + 2243875.

Almost surely, 2^231113872 is an apocalyptic number.

231113872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231113872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265851040).

231113872 is an abundant number, since it is smaller than the sum of its proper divisors (300588208).

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

231113872 is a wasteful number, since it uses less digits than its factorization.

231113872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 196 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 231113872 is about 15202.4298057909. The cubic root of 231113872 is about 613.6800491870.

The spelling of 231113872 in words is "two hundred thirty-one million, one hundred thirteen thousand, eight hundred seventy-two".