13211131 has 8 divisors (see below), whose sum is σ = 13837824. Its totient is φ = 12588840.

The previous prime is 13211129. The next prime is 13211161. The reversal of 13211131 is 13111231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13211131 - 2¹ = 13211129 is a prime.

It is a super-2 number, since 2×13211131² = 349067964598322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13211101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6126 + ... + 7996.

It is an arithmetic number, because the mean of its divisors is an integer number (1729728).

Almost surely, 2^13211131 is an apocalyptic number.

13211131 is a deficient number, since it is larger than the sum of its proper divisors (626693).

13211131 is a wasteful number, since it uses less digits than its factorization.

13211131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2201.

The product of its digits is 18, while the sum is 13.

The square root of 13211131 is about 3634.7119555750. The cubic root of 13211131 is about 236.3995613361.

Adding to 13211131 its reverse (13111231), we get a palindrome (26322362).

The spelling of 13211131 in words is "thirteen million, two hundred eleven thousand, one hundred thirty-one".