113891013 has 6 divisors (see below), whose sum is σ = 164509254. Its totient is φ = 75927336.

The previous prime is 113891003. The next prime is 113891021. The reversal of 113891013 is 310198311.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 95589729 + 18301284 = 9777^2 + 4278^2 .

It is not a de Polignac number, because 113891013 - 2⁶ = 113890949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113891003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6327270 + ... + 6327287.

It is an arithmetic number, because the mean of its divisors is an integer number (27418209).

Almost surely, 2^113891013 is an apocalyptic number.

It is an amenable number.

113891013 is a deficient number, since it is larger than the sum of its proper divisors (50618241).

113891013 is a wasteful number, since it uses less digits than its factorization.

113891013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12654563 (or 12654560 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 113891013 is about 10671.9732477176. The cubic root of 113891013 is about 484.7261897278.

The spelling of 113891013 in words is "one hundred thirteen million, eight hundred ninety-one thousand, thirteen".