11111113 has 16 divisors (see below), whose sum is σ = 12544000. Its totient is φ = 9771840.

The previous prime is 11111101. The next prime is 11111117. The reversal of 11111113 is 31111111.

It is a de Polignac number, because none of the positive numbers 2^k-11111113 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 11111113.

It is not an unprimeable number, because it can be changed into a prime (11111117) 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 15 ways as a sum of consecutive naturals, for example, 31663 + ... + 32011.

It is an arithmetic number, because the mean of its divisors is an integer number (784000).

Almost surely, 2^11111113 is an apocalyptic number.

11111113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11111113 is a deficient number, since it is larger than the sum of its proper divisors (1432887).

11111113 is a wasteful number, since it uses less digits than its factorization.

11111113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472.

The product of its digits is 3, while the sum is 10.

The square root of 11111113 is about 3333.3336166667. Note that the first 3 decimals coincide. The cubic root of 11111113 is about 223.1443293389.

Adding to 11111113 its reverse (31111111), we get a palindrome (42222224).

It can be divided in two parts, 1111111 and 3, that multiplied together give a palindrome (3333333).

The spelling of 11111113 in words is "eleven million, one hundred eleven thousand, one hundred thirteen".