13311131 has 4 divisors (see below), whose sum is σ = 13319064. Its totient is φ = 13303200.

The previous prime is 13311127. The next prime is 13311143. The reversal of 13311131 is 13111331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 13111331 = 509 ⋅25759.

It is a cyclic number.

It is not a de Polignac number, because 13311131 - 2² = 13311127 is a prime.

It is a super-2 number, since 2×13311131² = 354372416998322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13311161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350 + ... + 5171.

It is an arithmetic number, because the mean of its divisors is an integer number (3329766).

Almost surely, 2^13311131 is an apocalyptic number.

13311131 is a deficient number, since it is larger than the sum of its proper divisors (7933).

13311131 is an equidigital number, since it uses as much as digits as its factorization.

13311131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7932.

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

The square root of 13311131 is about 3648.4422703395. The cubic root of 13311131 is about 236.9945282909.

Adding to 13311131 its reverse (13111331), we get a palindrome (26422462).

The spelling of 13311131 in words is "thirteen million, three hundred eleven thousand, one hundred thirty-one".