22031313302231 has 2 divisors, whose sum is σ = 22031313302232. Its totient is φ = 22031313302230.

The previous prime is 22031313302177. The next prime is 22031313302233. The reversal of 22031313302231 is 13220331313022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22031313302231 is a prime.

It is a super-2 number, since 2×22031313302231² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 22031313302233, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22031313302231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22031313302233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11015656651115 + 11015656651116.

It is an arithmetic number, because the mean of its divisors is an integer number (11015656651116).

Almost surely, 2^{22031313302231} is an apocalyptic number.

22031313302231 is a deficient number, since it is larger than the sum of its proper divisors (1).

22031313302231 is an equidigital number, since it uses as much as digits as its factorization.

22031313302231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 22031313302231 its reverse (13220331313022), we get a palindrome (35251644615253).

The spelling of 22031313302231 in words is "twenty-two trillion, thirty-one billion, three hundred thirteen million, three hundred two thousand, two hundred thirty-one".