113185015310881 has 4 divisors (see below), whose sum is σ = 113185093013892. Its totient is φ = 113184937607872.

The previous prime is 113185015310879. The next prime is 113185015310891. The reversal of 113185015310881 is 188013510581311.

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

It can be written as a sum of positive squares in 2 ways, for example, as 77679386315281 + 35505628995600 = 8813591^2 + 5958660^2 .

It is a cyclic number.

It is not a de Polignac number, because 113185015310881 - 2¹ = 113185015310879 is a prime.

It is a super-2 number, since 2×113185015310881² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113185015310831) 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, 36623980 + ... + 39594013.

It is an arithmetic number, because the mean of its divisors is an integer number (28296273253473).

Almost surely, 2^{113185015310881} is an apocalyptic number.

It is an amenable number.

113185015310881 is a deficient number, since it is larger than the sum of its proper divisors (77703011).

113185015310881 is an equidigital number, since it uses as much as digits as its factorization.

113185015310881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77703010.

The product of its (nonzero) digits is 115200, while the sum is 46.

The spelling of 113185015310881 in words is "one hundred thirteen trillion, one hundred eighty-five billion, fifteen million, three hundred ten thousand, eight hundred eighty-one".