13111345 has 16 divisors (see below), whose sum is σ = 17341632. Its totient is φ = 9455040.

The previous prime is 13111333. The next prime is 13111363. The reversal of 13111345 is 54311131.

It is not a de Polignac number, because 13111345 - 2⁹ = 13110833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 450 + ... + 5140.

It is an arithmetic number, because the mean of its divisors is an integer number (1083852).

Almost surely, 2^13111345 is an apocalyptic number.

It is an amenable number.

13111345 is a deficient number, since it is larger than the sum of its proper divisors (4230287).

13111345 is a wasteful number, since it uses less digits than its factorization.

13111345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4752.

The product of its digits is 180, while the sum is 19.

The square root of 13111345 is about 3620.9591270822. The cubic root of 13111345 is about 235.8028673146.

Adding to 13111345 its reverse (54311131), we get a palindrome (67422476).

It can be divided in two parts, 13111 and 345, that added together give a square (13456 = 116²).

The spelling of 13111345 in words is "thirteen million, one hundred eleven thousand, three hundred forty-five".