13112131 has 4 divisors (see below), whose sum is σ = 13144600. Its totient is φ = 13079664.

The previous prime is 13112129. The next prime is 13112153. The reversal of 13112131 is 13121131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13121131 = 47 ⋅279173.

It is a cyclic number.

It is not a de Polignac number, because 13112131 - 2¹ = 13112129 is a prime.

It is a super-2 number, since 2×13112131² = 343855958722322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13112111) 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, 15621 + ... + 16438.

It is an arithmetic number, because the mean of its divisors is an integer number (3286150).

Almost surely, 2^13112131 is an apocalyptic number.

13112131 is a deficient number, since it is larger than the sum of its proper divisors (32469).

13112131 is an equidigital number, since it uses as much as digits as its factorization.

13112131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32468.

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

The square root of 13112131 is about 3621.0676602350. The cubic root of 13112131 is about 235.8075791971.

Adding to 13112131 its reverse (13121131), we get a palindrome (26233262).

The spelling of 13112131 in words is "thirteen million, one hundred twelve thousand, one hundred thirty-one".