13220032231 has 8 divisors (see below), whose sum is σ = 15120911520. Its totient is φ = 11322228768.

The previous prime is 13220032229. The next prime is 13220032261. The reversal of 13220032231 is 13223002231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13220032231 - 2¹ = 13220032229 is a prime.

It is a super-2 number, since 2×13220032231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13220032199 and 13220032208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220032261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 759736 + ... + 776941.

It is an arithmetic number, because the mean of its divisors is an integer number (1890113940).

Almost surely, 2^13220032231 is an apocalyptic number.

13220032231 is a deficient number, since it is larger than the sum of its proper divisors (1900879289).

13220032231 is a wasteful number, since it uses less digits than its factorization.

13220032231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537913.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 13220032231 its reverse (13223002231), we get a palindrome (26443034462).

The spelling of 13220032231 in words is "thirteen billion, two hundred twenty million, thirty-two thousand, two hundred thirty-one".