20313243212231 has 16 divisors (see below), whose sum is σ = 21923229470688. Its totient is φ = 18752271897600.

The previous prime is 20313243212221. The next prime is 20313243212261. The reversal of 20313243212231 is 13221234231302.

It is a cyclic number.

It is not a de Polignac number, because 20313243212231 - 2¹⁰ = 20313243211207 is a prime.

It is a super-2 number, since 2×20313243212231² (a number of 27 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 = 20313243212194 and 20313243212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313243212221) 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, 44992085 + ... + 45441326.

It is an arithmetic number, because the mean of its divisors is an integer number (1370201841918).

Almost surely, 2^{20313243212231} is an apocalyptic number.

20313243212231 is a deficient number, since it is larger than the sum of its proper divisors (1609986258457).

20313243212231 is a wasteful number, since it uses less digits than its factorization.

20313243212231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90433682.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 20313243212231 its reverse (13221234231302), we get a palindrome (33534477443533).

The spelling of 20313243212231 in words is "twenty trillion, three hundred thirteen billion, two hundred forty-three million, two hundred twelve thousand, two hundred thirty-one".