13111313 has 4 divisors (see below), whose sum is σ = 13143780. Its totient is φ = 13078848.

The previous prime is 13111309. The next prime is 13111327. The reversal of 13111313 is 31311131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12730624 + 380689 = 3568^2 + 617^2 .

It is a cyclic number.

It is not a de Polignac number, because 13111313 - 2² = 13111309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13111303) 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, 15620 + ... + 16437.

It is an arithmetic number, because the mean of its divisors is an integer number (3285945).

Almost surely, 2^13111313 is an apocalyptic number.

It is an amenable number.

13111313 is a deficient number, since it is larger than the sum of its proper divisors (32467).

13111313 is an equidigital number, since it uses as much as digits as its factorization.

13111313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32466.

The product of its digits is 27, while the sum is 14.

The square root of 13111313 is about 3620.9547083608. The cubic root of 13111313 is about 235.8026754783.

Adding to 13111313 its reverse (31311131), we get a palindrome (44422444).

It can be divided in two parts, 1311131 and 3, that multiplied together give a palindrome (3933393).

The spelling of 13111313 in words is "thirteen million, one hundred eleven thousand, three hundred thirteen".