20222312531 has 2 divisors, whose sum is σ = 20222312532. Its totient is φ = 20222312530.

The previous prime is 20222312497. The next prime is 20222312533. The reversal of 20222312531 is 13521322202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20222312531 - 2¹⁴ = 20222296147 is a prime.

It is a super-2 number, since 2×20222312531² (a number of 21 digits) contains 22 as substring.

Together with 20222312533, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20222312497 and 20222312506.

It is not a weakly prime, because it can be changed into another prime (20222312533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111156265 + 10111156266.

It is an arithmetic number, because the mean of its divisors is an integer number (10111156266).

Almost surely, 2^20222312531 is an apocalyptic number.

20222312531 is a deficient number, since it is larger than the sum of its proper divisors (1).

20222312531 is an equidigital number, since it uses as much as digits as its factorization.

20222312531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 20222312531 its reverse (13521322202), we get a palindrome (33743634733).

The spelling of 20222312531 in words is "twenty billion, two hundred twenty-two million, three hundred twelve thousand, five hundred thirty-one".