113581871 has 4 divisors (see below), whose sum is σ = 122318952. Its totient is φ = 104844792.

The previous prime is 113581841. The next prime is 113581957. The reversal of 113581871 is 178185311.

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

It is not a de Polignac number, because 113581871 - 2²² = 109387567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113581801) 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, 4368521 + ... + 4368546.

It is an arithmetic number, because the mean of its divisors is an integer number (30579738).

Almost surely, 2^113581871 is an apocalyptic number.

113581871 is a deficient number, since it is larger than the sum of its proper divisors (8737081).

113581871 is an equidigital number, since it uses as much as digits as its factorization.

113581871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8737080.

The product of its digits is 6720, while the sum is 35.

The square root of 113581871 is about 10657.4795800883. The cubic root of 113581871 is about 484.2872173964.

The spelling of 113581871 in words is "one hundred thirteen million, five hundred eighty-one thousand, eight hundred seventy-one".