13220310032 has 80 divisors (see below), whose sum is σ = 27658073520. Its totient is φ = 6099369984.

The previous prime is 13220310031. The next prime is 13220310041. The reversal of 13220310032 is 23001302231.

It can be written as a sum of positive squares in 8 ways, for example, as 14622976 + 13205687056 = 3824^2 + 114916^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (13220310031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2873558 + ... + 2878154.

It is an arithmetic number, because the mean of its divisors is an integer number (345725919).

Almost surely, 2^13220310032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13220310032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13829036760).

13220310032 is an abundant number, since it is smaller than the sum of its proper divisors (14437763488).

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

13220310032 is a wasteful number, since it uses less digits than its factorization.

13220310032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4828 (or 4822 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 13220310032 its reverse (23001302231), we get a palindrome (36221612263).

The spelling of 13220310032 in words is "thirteen billion, two hundred twenty million, three hundred ten thousand, thirty-two".