13021311131 has 4 divisors (see below), whose sum is σ = 13298360352. Its totient is φ = 12744261912.

The previous prime is 13021311119. The next prime is 13021311167. The reversal of 13021311131 is 13111312031.

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 13021311131 - 2⁶ = 13021311067 is a prime.

It is a super-2 number, since 2×13021311131² (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 (13021311101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138524540 + ... + 138524633.

It is an arithmetic number, because the mean of its divisors is an integer number (3324590088).

Almost surely, 2^13021311131 is an apocalyptic number.

13021311131 is a deficient number, since it is larger than the sum of its proper divisors (277049221).

13021311131 is an equidigital number, since it uses as much as digits as its factorization.

13021311131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277049220.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 13021311131 its reverse (13111312031), we get a palindrome (26132623162).

The spelling of 13021311131 in words is "thirteen billion, twenty-one million, three hundred eleven thousand, one hundred thirty-one".