1113431232 has 56 divisors (see below), whose sum is σ = 3025593136. Its totient is φ = 361110528.

The previous prime is 1113431227. The next prime is 1113431237. The reversal of 1113431232 is 2321343111.

It is an interprime number because it is at equal distance from previous prime (1113431227) and next prime (1113431237).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1113431199 and 1113431208.

It is not an unprimeable number, because it can be changed into a prime (1113431237) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 71263 + ... + 85470.

Almost surely, 2^1113431232 is an apocalyptic number.

1113431232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1113431232 is an abundant number, since it is smaller than the sum of its proper divisors (1912161904).

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

1113431232 is a wasteful number, since it uses less digits than its factorization.

1113431232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156785 (or 156775 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

The square root of 1113431232 is about 33368.1169981166. The cubic root of 1113431232 is about 1036.4645829536.

Adding to 1113431232 its reverse (2321343111), we get a palindrome (3434774343).

It can be divided in two parts, 111343 and 1232, that added together give a triangular number (112575 = T₄₇₄).

The spelling of 1113431232 in words is "one billion, one hundred thirteen million, four hundred thirty-one thousand, two hundred thirty-two".