20430243283 has 2 divisors, whose sum is σ = 20430243284. Its totient is φ = 20430243282.

The previous prime is 20430243209. The next prime is 20430243293. The reversal of 20430243283 is 38234203402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20430243283 - 2²⁹ = 19893372371 is a prime.

It is not a weakly prime, because it can be changed into another prime (20430243293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10215121641 + 10215121642.

It is an arithmetic number, because the mean of its divisors is an integer number (10215121642).

Almost surely, 2^20430243283 is an apocalyptic number.

20430243283 is a deficient number, since it is larger than the sum of its proper divisors (1).

20430243283 is an equidigital number, since it uses as much as digits as its factorization.

20430243283 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 20430243283 its reverse (38234203402), we get a palindrome (58664446685).

The spelling of 20430243283 in words is "twenty billion, four hundred thirty million, two hundred forty-three thousand, two hundred eighty-three".