113287999 has 4 divisors (see below), whose sum is σ = 123586920. Its totient is φ = 102989080.

The previous prime is 113287973. The next prime is 113288003. The reversal of 113287999 is 999782311.

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

It is a cyclic number.

It is not a de Polignac number, because 113287999 - 2⁹ = 113287487 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 (113287199) 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, 5149444 + ... + 5149465.

It is an arithmetic number, because the mean of its divisors is an integer number (30896730).

Almost surely, 2^113287999 is an apocalyptic number.

113287999 is a deficient number, since it is larger than the sum of its proper divisors (10298921).

113287999 is a wasteful number, since it uses less digits than its factorization.

113287999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10298920.

The product of its digits is 244944, while the sum is 49.

The square root of 113287999 is about 10643.6835259228. The cubic root of 113287999 is about 483.8691889162.

The spelling of 113287999 in words is "one hundred thirteen million, two hundred eighty-seven thousand, nine hundred ninety-nine".