113321999 has 4 divisors (see below), whose sum is σ = 129510864. Its totient is φ = 97133136.

The previous prime is 113321993. The next prime is 113322031. The reversal of 113321999 is 999123311.

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 113321999 - 2⁸ = 113321743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113321993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8094422 + ... + 8094435.

It is an arithmetic number, because the mean of its divisors is an integer number (32377716).

Almost surely, 2^113321999 is an apocalyptic number.

113321999 is a deficient number, since it is larger than the sum of its proper divisors (16188865).

113321999 is an equidigital number, since it uses as much as digits as its factorization.

113321999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16188864.

The product of its digits is 13122, while the sum is 38.

The square root of 113321999 is about 10645.2805975230. The cubic root of 113321999 is about 483.9175903563.

It can be divided in two parts, 11332 and 1999, that added together give a palindrome (13331).

The spelling of 113321999 in words is "one hundred thirteen million, three hundred twenty-one thousand, nine hundred ninety-nine".