113312121 has 8 divisors (see below), whose sum is σ = 162704640. Its totient is φ = 69730512.

The previous prime is 113312119. The next prime is 113312131. The reversal of 113312121 is 121213311.

It is a happy number.

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

It is not a de Polignac number, because 113312121 - 2¹ = 113312119 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 113312121.

It is not an unprimeable number, because it can be changed into a prime (113312131) 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 7 ways as a sum of consecutive naturals, for example, 1452681 + ... + 1452758.

It is an arithmetic number, because the mean of its divisors is an integer number (20338080).

Almost surely, 2^113312121 is an apocalyptic number.

It is an amenable number.

113312121 is a deficient number, since it is larger than the sum of its proper divisors (49392519).

113312121 is a wasteful number, since it uses less digits than its factorization.

113312121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905455.

The product of its digits is 36, while the sum is 15.

The square root of 113312121 is about 10644.8166259452. The cubic root of 113312121 is about 483.9035293123.

Adding to 113312121 its reverse (121213311), we get a palindrome (234525432).

The spelling of 113312121 in words is "one hundred thirteen million, three hundred twelve thousand, one hundred twenty-one".