13321402231 has 4 divisors (see below), whose sum is σ = 13322490912. Its totient is φ = 13320313552.

The previous prime is 13321402229. The next prime is 13321402247. The reversal of 13321402231 is 13220412331.

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

It is a cyclic number.

It is not a de Polignac number, because 13321402231 - 2¹ = 13321402229 is a prime.

It is a super-2 number, since 2×13321402231² (a number of 21 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 (13321402331) 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, 525775 + ... + 550528.

It is an arithmetic number, because the mean of its divisors is an integer number (3330622728).

Almost surely, 2^13321402231 is an apocalyptic number.

13321402231 is a deficient number, since it is larger than the sum of its proper divisors (1088681).

13321402231 is a wasteful number, since it uses less digits than its factorization.

13321402231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088680.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 13321402231 its reverse (13220412331), we get a palindrome (26541814562).

The spelling of 13321402231 in words is "thirteen billion, three hundred twenty-one million, four hundred two thousand, two hundred thirty-one".