113121311 has 8 divisors (see below), whose sum is σ = 115518144. Its totient is φ = 110747520.

The previous prime is 113121301. The next prime is 113121317.

It is a happy number.

113121311 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113121311 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 (113121317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4346 + ... + 15656.

It is an arithmetic number, because the mean of its divisors is an integer number (14439768).

Almost surely, 2^113121311 is an apocalyptic number.

113121311 is a deficient number, since it is larger than the sum of its proper divisors (2396833).

113121311 is a wasteful number, since it uses less digits than its factorization.

113121311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11521.

The product of its digits is 18, while the sum is 14.

The square root of 113121311 is about 10635.8502716050. The cubic root of 113121311 is about 483.6317563603.

The spelling of 113121311 in words is "one hundred thirteen million, one hundred twenty-one thousand, three hundred eleven".