20304222031 has 2 divisors, whose sum is σ = 20304222032. Its totient is φ = 20304222030.

The previous prime is 20304222019. The next prime is 20304222077. The reversal of 20304222031 is 13022240302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20304222031 - 2²³ = 20295833423 is a prime.

It is a super-2 number, since 2×20304222031² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20304222011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10152111015 + 10152111016.

It is an arithmetic number, because the mean of its divisors is an integer number (10152111016).

Almost surely, 2^20304222031 is an apocalyptic number.

20304222031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20304222031 is an equidigital number, since it uses as much as digits as its factorization.

20304222031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20304222031 its reverse (13022240302), we get a palindrome (33326462333).

The spelling of 20304222031 in words is "twenty billion, three hundred four million, two hundred twenty-two thousand, thirty-one".