113111113 has 4 divisors (see below), whose sum is σ = 115741648. Its totient is φ = 110480580.

The previous prime is 113111099. The next prime is 113111137. The reversal of 113111113 is 311111311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 311111311 = 7 ⋅44444473.

It is a cyclic number.

It is not a de Polignac number, because 113111113 - 2¹⁷ = 112980041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113111093 and 113111102.

It is not an unprimeable number, because it can be changed into a prime (113211113) 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, 1315203 + ... + 1315288.

It is an arithmetic number, because the mean of its divisors is an integer number (28935412).

Almost surely, 2^113111113 is an apocalyptic number.

It is an amenable number.

113111113 is a deficient number, since it is larger than the sum of its proper divisors (2630535).

113111113 is an equidigital number, since it uses as much as digits as its factorization.

113111113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2630534.

The product of its digits is 9, while the sum is 13.

The square root of 113111113 is about 10635.3708444981. The cubic root of 113111113 is about 483.6172226271.

Adding to 113111113 its reverse (311111311), we get a palindrome (424222424).

It can be divided in two parts, 11 and 3111113, that multiplied together give a palindrome (34222243).

The spelling of 113111113 in words is "one hundred thirteen million, one hundred eleven thousand, one hundred thirteen".