113812861 has 4 divisors (see below), whose sum is σ = 113834592. Its totient is φ = 113791132.

The previous prime is 113812859. The next prime is 113812879. The reversal of 113812861 is 168218311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 113812861 - 2¹ = 113812859 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 (113812801) 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, 2346 + ... + 15268.

It is an arithmetic number, because the mean of its divisors is an integer number (28458648).

Almost surely, 2^113812861 is an apocalyptic number.

It is an amenable number.

113812861 is a deficient number, since it is larger than the sum of its proper divisors (21731).

113812861 is an equidigital number, since it uses as much as digits as its factorization.

113812861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21730.

The product of its digits is 2304, while the sum is 31.

The square root of 113812861 is about 10668.3110659560. The cubic root of 113812861 is about 484.6152913393.

The spelling of 113812861 in words is "one hundred thirteen million, eight hundred twelve thousand, eight hundred sixty-one".