113181861 has 8 divisors (see below), whose sum is σ = 162517600. Its totient is φ = 69650352.

The previous prime is 113181851. The next prime is 113181889. The reversal of 113181861 is 168181311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 113181861 - 2⁵ = 113181829 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 (113181851) 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, 1451011 + ... + 1451088.

It is an arithmetic number, because the mean of its divisors is an integer number (20314700).

Almost surely, 2^113181861 is an apocalyptic number.

It is an amenable number.

113181861 is a deficient number, since it is larger than the sum of its proper divisors (49335739).

113181861 is a wasteful number, since it uses less digits than its factorization.

113181861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902115.

The product of its digits is 1152, while the sum is 30.

The square root of 113181861 is about 10638.6963957056. The cubic root of 113181861 is about 483.7180315259.

The spelling of 113181861 in words is "one hundred thirteen million, one hundred eighty-one thousand, eight hundred sixty-one".