13312131 has 16 divisors (see below), whose sum is σ = 20985600. Its totient is φ = 7344288.

The previous prime is 13312129. The next prime is 13312133. The reversal of 13312131 is 13121331.

It is an interprime number because it is at equal distance from previous prime (13312129) and next prime (13312133).

It is not a de Polignac number, because 13312131 - 2¹ = 13312129 is a prime.

It is a super-2 number, since 2×13312131² = 354425663522322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13312131.

It is not an unprimeable number, because it can be changed into a prime (13312133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10321 + ... + 11538.

It is an arithmetic number, because the mean of its divisors is an integer number (1311600).

Almost surely, 2^13312131 is an apocalyptic number.

13312131 is a deficient number, since it is larger than the sum of its proper divisors (7673469).

13312131 is a wasteful number, since it uses less digits than its factorization.

13312131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21898.

The product of its digits is 54, while the sum is 15.

The square root of 13312131 is about 3648.5793125544. The cubic root of 13312131 is about 237.0004628879. Note that the first 3 decimals are identical.

Adding to 13312131 its reverse (13121331), we get a palindrome (26433462).

The spelling of 13312131 in words is "thirteen million, three hundred twelve thousand, one hundred thirty-one".