13231221413 has 4 divisors (see below), whose sum is σ = 13289508960. Its totient is φ = 13172933868.

The previous prime is 13231221379. The next prime is 13231221467. The reversal of 13231221413 is 31412213231.

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 13231221413 - 2¹⁰ = 13231220389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231221013) 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, 29143433 + ... + 29143886.

It is an arithmetic number, because the mean of its divisors is an integer number (3322377240).

Almost surely, 2^13231221413 is an apocalyptic number.

It is an amenable number.

13231221413 is a deficient number, since it is larger than the sum of its proper divisors (58287547).

13231221413 is an equidigital number, since it uses as much as digits as its factorization.

13231221413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58287546.

The product of its digits is 864, while the sum is 23.

Adding to 13231221413 its reverse (31412213231), we get a palindrome (44643434644).

The spelling of 13231221413 in words is "thirteen billion, two hundred thirty-one million, two hundred twenty-one thousand, four hundred thirteen".