20430230311 has 2 divisors, whose sum is σ = 20430230312. Its totient is φ = 20430230310.

The previous prime is 20430230291. The next prime is 20430230351. The reversal of 20430230311 is 11303203402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20430230311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20430230351) 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, 10215115155 + 10215115156.

It is an arithmetic number, because the mean of its divisors is an integer number (10215115156).

Almost surely, 2^20430230311 is an apocalyptic number.

20430230311 is a deficient number, since it is larger than the sum of its proper divisors (1).

20430230311 is an equidigital number, since it uses as much as digits as its factorization.

20430230311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20430230311 its reverse (11303203402), we get a palindrome (31733433713).

The spelling of 20430230311 in words is "twenty billion, four hundred thirty million, two hundred thirty thousand, three hundred eleven".