13020322231 has 4 divisors (see below), whose sum is σ = 14880368272. Its totient is φ = 11160276192.

The previous prime is 13020322229. The next prime is 13020322279. The reversal of 13020322231 is 13222302031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13222302031 = 23 ⋅574882697.

It is a cyclic number.

It is not a de Polignac number, because 13020322231 - 2¹ = 13020322229 is a prime.

It is a super-2 number, since 2×13020322231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13020322199 and 13020322208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13020320231) 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, 930023010 + ... + 930023023.

It is an arithmetic number, because the mean of its divisors is an integer number (3720092068).

Almost surely, 2^13020322231 is an apocalyptic number.

13020322231 is a deficient number, since it is larger than the sum of its proper divisors (1860046041).

13020322231 is an equidigital number, since it uses as much as digits as its factorization.

13020322231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860046040.

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

Adding to 13020322231 its reverse (13222302031), we get a palindrome (26242624262).

The spelling of 13020322231 in words is "thirteen billion, twenty million, three hundred twenty-two thousand, two hundred thirty-one".