113121320303 has 4 divisors (see below), whose sum is σ = 114122394048. Its totient is φ = 112120246560.

The previous prime is 113121320209. The next prime is 113121320317. The reversal of 113121320303 is 303023121311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 303023121311 = 1321 ⋅229389191.

It is a cyclic number.

It is not a de Polignac number, because 113121320303 - 2¹⁰ = 113121319279 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 (113121320353) 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, 500536703 + ... + 500536928.

It is an arithmetic number, because the mean of its divisors is an integer number (28530598512).

Almost surely, 2^113121320303 is an apocalyptic number.

113121320303 is a deficient number, since it is larger than the sum of its proper divisors (1001073745).

113121320303 is a wasteful number, since it uses less digits than its factorization.

113121320303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001073744.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 113121320303 its reverse (303023121311), we get a palindrome (416144441614).

The spelling of 113121320303 in words is "one hundred thirteen billion, one hundred twenty-one million, three hundred twenty thousand, three hundred three".