13313331331213 has 4 divisors (see below), whose sum is σ = 13313369670588. Its totient is φ = 13313292991840.

The previous prime is 13313331331187. The next prime is 13313331331219. The reversal of 13313331331213 is 31213313331331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2618318806884 + 10695012524329 = 1618122^2 + 3270323^2 .

It is a cyclic number.

It is not a de Polignac number, because 13313331331213 - 2³³ = 13304741396621 is a prime.

It is a super-2 number, since 2×13313331331213² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13313331331219) 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, 18644008 + ... + 19344913.

It is an arithmetic number, because the mean of its divisors is an integer number (3328342417647).

Almost surely, 2^{13313331331213} is an apocalyptic number.

It is an amenable number.

13313331331213 is a deficient number, since it is larger than the sum of its proper divisors (38339375).

13313331331213 is an equidigital number, since it uses as much as digits as its factorization.

13313331331213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38339374.

The product of its digits is 13122, while the sum is 31.

Adding to 13313331331213 its reverse (31213313331331), we get a palindrome (44526644662544).

The spelling of 13313331331213 in words is "thirteen trillion, three hundred thirteen billion, three hundred thirty-one million, three hundred thirty-one thousand, two hundred thirteen".