113396781 has 16 divisors (see below), whose sum is σ = 153140544. Its totient is φ = 74630784.

The previous prime is 113396753. The next prime is 113396797. The reversal of 113396781 is 187693311.

It is not a de Polignac number, because 113396781 - 2⁷ = 113396653 is a prime.

It is a super-2 number, since 2×113396781² = 25717659882323922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113396711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146311 + ... + 147083.

It is an arithmetic number, because the mean of its divisors is an integer number (9571284).

Almost surely, 2^113396781 is an apocalyptic number.

It is an amenable number.

113396781 is a deficient number, since it is larger than the sum of its proper divisors (39743763).

113396781 is a wasteful number, since it uses less digits than its factorization.

113396781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340.

The product of its digits is 27216, while the sum is 39.

The square root of 113396781 is about 10648.7924667542. The cubic root of 113396781 is about 484.0240138462.

The spelling of 113396781 in words is "one hundred thirteen million, three hundred ninety-six thousand, seven hundred eighty-one".