113011321 has 4 divisors (see below), whose sum is σ = 113032612. Its totient is φ = 112990032.

The previous prime is 113011313. The next prime is 113011361. The reversal of 113011321 is 123110311.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 41100921 + 71910400 = 6411^2 + 8480^2 .

It is a cyclic number.

It is not a de Polignac number, because 113011321 - 2³ = 113011313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113011361) 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, 4495 + ... + 15691.

It is an arithmetic number, because the mean of its divisors is an integer number (28258153).

Almost surely, 2^113011321 is an apocalyptic number.

It is an amenable number.

113011321 is a deficient number, since it is larger than the sum of its proper divisors (21291).

113011321 is a wasteful number, since it uses less digits than its factorization.

113011321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21290.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 113011321 is about 10630.6782944457. The cubic root of 113011321 is about 483.4749574146.

Adding to 113011321 its reverse (123110311), we get a palindrome (236121632).

The spelling of 113011321 in words is "one hundred thirteen million, eleven thousand, three hundred twenty-one".