20313223222031 has 2 divisors, whose sum is σ = 20313223222032. Its totient is φ = 20313223222030.

The previous prime is 20313223222001. The next prime is 20313223222043. The reversal of 20313223222031 is 13022232231302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20313223222031 - 2¹⁰ = 20313223221007 is a prime.

It is a super-2 number, since 2×20313223222031² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20313223222001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156611611015 + 10156611611016.

It is an arithmetic number, because the mean of its divisors is an integer number (10156611611016).

Almost surely, 2^{20313223222031} is an apocalyptic number.

20313223222031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20313223222031 is an equidigital number, since it uses as much as digits as its factorization.

20313223222031 is an evil number, because the sum of its binary digits is even.

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

Adding to 20313223222031 its reverse (13022232231302), we get a palindrome (33335455453333).

The spelling of 20313223222031 in words is "twenty trillion, three hundred thirteen billion, two hundred twenty-three million, two hundred twenty-two thousand, thirty-one".