13223131213 has 4 divisors (see below), whose sum is σ = 13227596928. Its totient is φ = 13218665500.

The previous prime is 13223131211. The next prime is 13223131217. The reversal of 13223131213 is 31213132231.

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.

It is a cyclic number.

It is not a de Polignac number, because 13223131213 - 2¹ = 13223131211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13223131211) 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, 2228413 + ... + 2234338.

It is an arithmetic number, because the mean of its divisors is an integer number (3306899232).

Almost surely, 2^13223131213 is an apocalyptic number.

It is an amenable number.

13223131213 is a deficient number, since it is larger than the sum of its proper divisors (4465715).

13223131213 is an equidigital number, since it uses as much as digits as its factorization.

13223131213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4465714.

The product of its digits is 648, while the sum is 22.

Adding to 13223131213 its reverse (31213132231), we get a palindrome (44436263444).

The spelling of 13223131213 in words is "thirteen billion, two hundred twenty-three million, one hundred thirty-one thousand, two hundred thirteen".