20302273237 has 2 divisors, whose sum is σ = 20302273238. Its totient is φ = 20302273236.

The previous prime is 20302273231. The next prime is 20302273241. The reversal of 20302273237 is 73237220302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12492309361 + 7809963876 = 111769^2 + 88374^2 .

It is a cyclic number.

It is not a de Polignac number, because 20302273237 - 2⁷ = 20302273109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20302273199 and 20302273208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20302273231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151136618 + 10151136619.

It is an arithmetic number, because the mean of its divisors is an integer number (10151136619).

Almost surely, 2^20302273237 is an apocalyptic number.

It is an amenable number.

20302273237 is a deficient number, since it is larger than the sum of its proper divisors (1).

20302273237 is an equidigital number, since it uses as much as digits as its factorization.

20302273237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 31.

Adding to 20302273237 its reverse (73237220302), we get a palindrome (93539493539).

The spelling of 20302273237 in words is "twenty billion, three hundred two million, two hundred seventy-three thousand, two hundred thirty-seven".