21303000430351 has 2 divisors, whose sum is σ = 21303000430352. Its totient is φ = 21303000430350.

The previous prime is 21303000430267. The next prime is 21303000430357. The reversal of 21303000430351 is 15303400030312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21303000430351 - 2³⁹ = 20753244616463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21303000430357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10651500215175 + 10651500215176.

It is an arithmetic number, because the mean of its divisors is an integer number (10651500215176).

Almost surely, 2^{21303000430351} is an apocalyptic number.

21303000430351 is a deficient number, since it is larger than the sum of its proper divisors (1).

21303000430351 is an equidigital number, since it uses as much as digits as its factorization.

21303000430351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 25.

Adding to 21303000430351 its reverse (15303400030312), we get a palindrome (36606400460663).

The spelling of 21303000430351 in words is "twenty-one trillion, three hundred three billion, four hundred thirty thousand, three hundred fifty-one".