113231312 has 20 divisors (see below), whose sum is σ = 226951620. Its totient is φ = 54663168.

The previous prime is 113231309. The next prime is 113231329. The reversal of 113231312 is 213132311.

It can be written as a sum of positive squares in 2 ways, for example, as 26666896 + 86564416 = 5164^2 + 9304^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121553 + ... + 122480.

It is an arithmetic number, because the mean of its divisors is an integer number (11347581).

Almost surely, 2^113231312 is an apocalyptic number.

It is an amenable number.

113231312 is an abundant number, since it is smaller than the sum of its proper divisors (113720308).

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

113231312 is a wasteful number, since it uses less digits than its factorization.

113231312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244070 (or 244064 counting only the distinct ones).

The product of its digits is 108, while the sum is 17.

The square root of 113231312 is about 10641.0202518368. The cubic root of 113231312 is about 483.7884693660.

Adding to 113231312 its reverse (213132311), we get a palindrome (326363623).

Subtracting 113231312 from its reverse (213132311), we obtain a palindrome (99900999).

It can be divided in two parts, 11 and 3231312, that added together give a palindrome (3231323).

The spelling of 113231312 in words is "one hundred thirteen million, two hundred thirty-one thousand, three hundred twelve".