13231132313 has 4 divisors (see below), whose sum is σ = 15121294080. Its totient is φ = 11340970548.

The previous prime is 13231132309. The next prime is 13231132319. The reversal of 13231132313 is 31323113231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31323113231 = 137 ⋅228635863.

It is a cyclic number.

It is not a de Polignac number, because 13231132313 - 2² = 13231132309 is a prime.

It is a super-2 number, since 2×13231132313² (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 (13231132319) 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, 945080873 + ... + 945080886.

It is an arithmetic number, because the mean of its divisors is an integer number (3780323520).

Almost surely, 2^13231132313 is an apocalyptic number.

It is an amenable number.

13231132313 is a deficient number, since it is larger than the sum of its proper divisors (1890161767).

13231132313 is an equidigital number, since it uses as much as digits as its factorization.

13231132313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1890161766.

The product of its digits is 972, while the sum is 23.

Adding to 13231132313 its reverse (31323113231), we get a palindrome (44554245544).

It can be divided in two parts, 1323113231 and 3, that multiplied together give a palindrome (3969339693).

The spelling of 13231132313 in words is "thirteen billion, two hundred thirty-one million, one hundred thirty-two thousand, three hundred thirteen".