113536431 has 8 divisors (see below), whose sum is σ = 168202160. Its totient is φ = 75690936.

The previous prime is 113536429. The next prime is 113536513. The reversal of 113536431 is 134635311.

113536431 is a `hidden beast` number, since 1 + 13 + 5 + 3 + 643 + 1 = 666.

It is not a de Polignac number, because 113536431 - 2¹ = 113536429 is a prime.

It is a super-2 number, since 2×113536431² = 25781042328435522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4205053 = 113536431 / (1 + 1 + 3 + 5 + 3 + 6 + 4 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113536395 and 113536404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113536231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2102500 + ... + 2102553.

It is an arithmetic number, because the mean of its divisors is an integer number (21025270).

Almost surely, 2^113536431 is an apocalyptic number.

113536431 is a deficient number, since it is larger than the sum of its proper divisors (54665729).

113536431 is an equidigital number, since it uses as much as digits as its factorization.

113536431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4205062 (or 4205056 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 113536431 is about 10655.3475307003. The cubic root of 113536431 is about 484.2226268468. Note that the first 3 decimals are identical.

The spelling of 113536431 in words is "one hundred thirteen million, five hundred thirty-six thousand, four hundred thirty-one".