13321231002 has 40 divisors (see below), whose sum is σ = 30128430816. Its totient is φ = 4398905448.

The previous prime is 13321230947. The next prime is 13321231003. The reversal of 13321231002 is 20013212331.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (13321231003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 366918 + ... + 401585.

Almost surely, 2^13321231002 is an apocalyptic number.

13321231002 is an abundant number, since it is smaller than the sum of its proper divisors (16807199814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13321231002 is a wasteful number, since it uses less digits than its factorization.

13321231002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768624 (or 768615 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13321231002 its reverse (20013212331), we get a palindrome (33334443333).

The spelling of 13321231002 in words is "thirteen billion, three hundred twenty-one million, two hundred thirty-one thousand, two".