113409011321 has 4 divisors (see below), whose sum is σ = 120080129652. Its totient is φ = 106737892992.

The previous prime is 113409011311. The next prime is 113409011341. The reversal of 113409011321 is 123110904311.

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 31174846096 + 82234165225 = 176564^2 + 286765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113409011321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113409011311) 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, 3335559140 + ... + 3335559173.

It is an arithmetic number, because the mean of its divisors is an integer number (30020032413).

Almost surely, 2^113409011321 is an apocalyptic number.

It is an amenable number.

113409011321 is a deficient number, since it is larger than the sum of its proper divisors (6671118331).

113409011321 is an equidigital number, since it uses as much as digits as its factorization.

113409011321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6671118330.

The product of its (nonzero) digits is 648, while the sum is 26.

Adding to 113409011321 its reverse (123110904311), we get a palindrome (236519915632).

It can be divided in two parts, 1134090 and 11321, that added together give a palindrome (1145411).

The spelling of 113409011321 in words is "one hundred thirteen billion, four hundred nine million, eleven thousand, three hundred twenty-one".