20300000423 has 2 divisors, whose sum is σ = 20300000424. Its totient is φ = 20300000422.

The previous prime is 20300000411. The next prime is 20300000431. The reversal of 20300000423 is 32400000302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20300000423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20300000398 and 20300000407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20300000443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10150000211 + 10150000212.

It is an arithmetic number, because the mean of its divisors is an integer number (10150000212).

Almost surely, 2^20300000423 is an apocalyptic number.

20300000423 is a deficient number, since it is larger than the sum of its proper divisors (1).

20300000423 is an equidigital number, since it uses as much as digits as its factorization.

20300000423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 14.

Adding to 20300000423 its reverse (32400000302), we get a palindrome (52700000725).

The spelling of 20300000423 in words is "twenty billion, three hundred million, four hundred twenty-three", and thus it is an aban number.