113632431 has 12 divisors (see below), whose sum is σ = 166536216. Its totient is φ = 68867920.

The previous prime is 113632429. The next prime is 113632451. The reversal of 113632431 is 134236311.

It is a happy number.

It is not a de Polignac number, because 113632431 - 2¹ = 113632429 is a prime.

It is a super-2 number, since 2×113632431² = 25824658749939522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113632451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156156 + ... + 156881.

It is an arithmetic number, because the mean of its divisors is an integer number (13878018).

Almost surely, 2^113632431 is an apocalyptic number.

113632431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

113632431 is a deficient number, since it is larger than the sum of its proper divisors (52903785).

113632431 is a wasteful number, since it uses less digits than its factorization.

113632431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313062 (or 313051 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

The square root of 113632431 is about 10659.8513591888. The cubic root of 113632431 is about 484.3590655098.

Adding to 113632431 its reverse (134236311), we get a palindrome (247868742).

The spelling of 113632431 in words is "one hundred thirteen million, six hundred thirty-two thousand, four hundred thirty-one".