13113111 has 16 divisors (see below), whose sum is σ = 19202688. Its totient is φ = 7893600.

The previous prime is 13113091. The next prime is 13113119. The reversal of 13113111 is 11131131.

It is not a de Polignac number, because 13113111 - 2²¹ = 11015959 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13113119) 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, 3916 + ... + 6446.

It is an arithmetic number, because the mean of its divisors is an integer number (1200168).

Almost surely, 2^13113111 is an apocalyptic number.

13113111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13113111 is a deficient number, since it is larger than the sum of its proper divisors (6089577).

13113111 is a wasteful number, since it uses less digits than its factorization.

13113111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2702.

The product of its digits is 9, while the sum is 12.

The square root of 13113111 is about 3621.2029769125. The cubic root of 13113111 is about 235.8134537995.

Adding to 13113111 its reverse (11131131), we get a palindrome (24244242).

It can be divided in two parts, 131131 and 11, that multiplied together give a palindrome (1442441).

The spelling of 13113111 in words is "thirteen million, one hundred thirteen thousand, one hundred eleven".