13287398131 has 4 divisors (see below), whose sum is σ = 15185597872. Its totient is φ = 11389198392.

The previous prime is 13287398129. The next prime is 13287398143. The reversal of 13287398131 is 13189378231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13189378231 = 51673 ⋅255247.

It is a cyclic number.

It is not a de Polignac number, because 13287398131 - 2¹ = 13287398129 is a prime.

It is a super-2 number, since 2×13287398131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13287318131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 949099860 + ... + 949099873.

It is an arithmetic number, because the mean of its divisors is an integer number (3796399468).

Almost surely, 2^13287398131 is an apocalyptic number.

13287398131 is a deficient number, since it is larger than the sum of its proper divisors (1898199741).

13287398131 is an equidigital number, since it uses as much as digits as its factorization.

13287398131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898199740.

The product of its digits is 217728, while the sum is 46.

The spelling of 13287398131 in words is "thirteen billion, two hundred eighty-seven million, three hundred ninety-eight thousand, one hundred thirty-one".