13231202313 has 24 divisors (see below), whose sum is σ = 20565915552. Its totient is φ = 7544457984.

The previous prime is 13231202279. The next prime is 13231202333. The reversal of 13231202313 is 31320213231.

It is not a de Polignac number, because 13231202313 - 2⁸ = 13231202057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 13231202313.

It is not an unprimeable number, because it can be changed into a prime (13231202333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27720 + ... + 165017.

It is an arithmetic number, because the mean of its divisors is an integer number (856913148).

Almost surely, 2^13231202313 is an apocalyptic number.

It is an amenable number.

13231202313 is a deficient number, since it is larger than the sum of its proper divisors (7334713239).

13231202313 is a wasteful number, since it uses less digits than its factorization.

13231202313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193221 (or 193214 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 13231202313 its reverse (31320213231), we get a palindrome (44551415544).

The spelling of 13231202313 in words is "thirteen billion, two hundred thirty-one million, two hundred two thousand, three hundred thirteen".