20310022202231 has 2 divisors, whose sum is σ = 20310022202232. Its totient is φ = 20310022202230.

The previous prime is 20310022202209. The next prime is 20310022202233. The reversal of 20310022202231 is 13220222001302.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20310022202231 is a prime.

It is a super-2 number, since 2×20310022202231² (a number of 27 digits) contains 22 as substring.

Together with 20310022202233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20310022202233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155011101115 + 10155011101116.

It is an arithmetic number, because the mean of its divisors is an integer number (10155011101116).

Almost surely, 2^{20310022202231} is an apocalyptic number.

20310022202231 is a deficient number, since it is larger than the sum of its proper divisors (1).

20310022202231 is an equidigital number, since it uses as much as digits as its factorization.

20310022202231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20310022202231 its reverse (13220222001302), we get a palindrome (33530244203533).

The spelling of 20310022202231 in words is "twenty trillion, three hundred ten billion, twenty-two million, two hundred two thousand, two hundred thirty-one".