13231203213 has 4 divisors (see below), whose sum is σ = 17641604288. Its totient is φ = 8820802140.

The previous prime is 13231203211. The next prime is 13231203239. The reversal of 13231203213 is 31230213231.

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 not a de Polignac number, because 13231203213 - 2¹ = 13231203211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13231203213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231203211) 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, 2205200533 + ... + 2205200538.

It is an arithmetic number, because the mean of its divisors is an integer number (4410401072).

Almost surely, 2^13231203213 is an apocalyptic number.

It is an amenable number.

13231203213 is a deficient number, since it is larger than the sum of its proper divisors (4410401075).

13231203213 is an equidigital number, since it uses as much as digits as its factorization.

13231203213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4410401074.

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

Adding to 13231203213 its reverse (31230213231), we get a palindrome (44461416444).

The spelling of 13231203213 in words is "thirteen billion, two hundred thirty-one million, two hundred three thousand, two hundred thirteen".