113537971 has 4 divisors (see below), whose sum is σ = 114034000. Its totient is φ = 113041944.

The previous prime is 113537953. The next prime is 113537981. The reversal of 113537971 is 179735311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 113537971 - 2¹⁷ = 113406899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113537971.

It is not an unprimeable number, because it can be changed into a prime (113537911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247671 + ... + 248128.

It is an arithmetic number, because the mean of its divisors is an integer number (28508500).

Almost surely, 2^113537971 is an apocalyptic number.

113537971 is a deficient number, since it is larger than the sum of its proper divisors (496029).

113537971 is an equidigital number, since it uses as much as digits as its factorization.

113537971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496028.

The product of its digits is 19845, while the sum is 37.

The square root of 113537971 is about 10655.4197946397. The cubic root of 113537971 is about 484.2248161573.

The spelling of 113537971 in words is "one hundred thirteen million, five hundred thirty-seven thousand, nine hundred seventy-one".