13220323222031 has 4 divisors (see below), whose sum is σ = 13221814861632. Its totient is φ = 13218831582432.

The previous prime is 13220323222019. The next prime is 13220323222069. The reversal of 13220323222031 is 13022232302231.

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 13220323222031 - 2³⁸ = 12945445315087 is a prime.

It is a super-2 number, since 2×13220323222031² (a number of 27 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 (13220323222091) 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, 745806506 + ... + 745824231.

It is an arithmetic number, because the mean of its divisors is an integer number (3305453715408).

Almost surely, 2^{13220323222031} is an apocalyptic number.

13220323222031 is a deficient number, since it is larger than the sum of its proper divisors (1491639601).

13220323222031 is an equidigital number, since it uses as much as digits as its factorization.

13220323222031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491639600.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 13220323222031 its reverse (13022232302231), we get a palindrome (26242555524262).

The spelling of 13220323222031 in words is "thirteen trillion, two hundred twenty billion, three hundred twenty-three million, two hundred twenty-two thousand, thirty-one".