20303012231 has 2 divisors, whose sum is σ = 20303012232. Its totient is φ = 20303012230.

The previous prime is 20303012227. The next prime is 20303012243. The reversal of 20303012231 is 13221030302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20303012231 - 2² = 20303012227 is a prime.

It is a super-2 number, since 2×20303012231² (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 (20303012251) 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, 10151506115 + 10151506116.

It is an arithmetic number, because the mean of its divisors is an integer number (10151506116).

Almost surely, 2^20303012231 is an apocalyptic number.

20303012231 is a deficient number, since it is larger than the sum of its proper divisors (1).

20303012231 is an equidigital number, since it uses as much as digits as its factorization.

20303012231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20303012231 its reverse (13221030302), we get a palindrome (33524042533).

The spelling of 20303012231 in words is "twenty billion, three hundred three million, twelve thousand, two hundred thirty-one".