113328111781 has 4 divisors (see below), whose sum is σ = 113342935500. Its totient is φ = 113313288064.

The previous prime is 113328111749. The next prime is 113328111803. The reversal of 113328111781 is 187111823311.

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 21746221156 + 91581890625 = 147466^2 + 302625^2 .

It is a cyclic number.

It is not a de Polignac number, because 113328111781 - 2⁵ = 113328111749 is a prime.

It is a super-2 number, since 2×113328111781² (a number of 23 digits) contains 22 as substring.

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 113328111781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113328111181) 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, 7400386 + ... + 7415683.

It is an arithmetic number, because the mean of its divisors is an integer number (28335733875).

Almost surely, 2^113328111781 is an apocalyptic number.

It is an amenable number.

113328111781 is a deficient number, since it is larger than the sum of its proper divisors (14823719).

113328111781 is an equidigital number, since it uses as much as digits as its factorization.

113328111781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14823718.

The product of its digits is 8064, while the sum is 37.

The spelling of 113328111781 in words is "one hundred thirteen billion, three hundred twenty-eight million, one hundred eleven thousand, seven hundred eighty-one".