113400231 has 32 divisors (see below), whose sum is σ = 177569280. Its totient is φ = 63033984.

The previous prime is 113400223. The next prime is 113400233. The reversal of 113400231 is 132004311.

It is not a de Polignac number, because 113400231 - 2³ = 113400223 is a prime.

It is a super-2 number, since 2×113400231² = 25719224781706722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 113400231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113400233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154341 + ... + 155073.

It is an arithmetic number, because the mean of its divisors is an integer number (5549040).

Almost surely, 2^113400231 is an apocalyptic number.

113400231 is a deficient number, since it is larger than the sum of its proper divisors (64169049).

113400231 is a wasteful number, since it uses less digits than its factorization.

113400231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 113400231 is about 10648.9544557201. The cubic root of 113400231 is about 484.0289224685.

Adding to 113400231 its reverse (132004311), we get a palindrome (245404542).

The spelling of 113400231 in words is "one hundred thirteen million, four hundred thousand, two hundred thirty-one".