13331131 has 4 divisors (see below), whose sum is σ = 14543064. Its totient is φ = 12119200.

The previous prime is 13331119. The next prime is 13331167. The reversal of 13331131 is 13113331.

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

It is a cyclic number.

It is not a de Polignac number, because 13331131 - 2¹¹ = 13329083 is a prime.

It is a super-2 number, since 2×13331131² = 355438107478322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13331231) 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, 605950 + ... + 605971.

It is an arithmetic number, because the mean of its divisors is an integer number (3635766).

Almost surely, 2^13331131 is an apocalyptic number.

13331131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13331131 is a deficient number, since it is larger than the sum of its proper divisors (1211933).

13331131 is a wasteful number, since it uses less digits than its factorization.

13331131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211932.

The product of its digits is 81, while the sum is 16.

The square root of 13331131 is about 3651.1821373358. The cubic root of 13331131 is about 237.1131638060.

Adding to 13331131 its reverse (13113331), we get a palindrome (26444462).

The spelling of 13331131 in words is "thirteen million, three hundred thirty-one thousand, one hundred thirty-one".