21303146713 has 2 divisors, whose sum is σ = 21303146714. Its totient is φ = 21303146712.

The previous prime is 21303146681. The next prime is 21303146729. The reversal of 21303146713 is 31764130312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20606028304 + 697118409 = 143548^2 + 26403^2 .

It is a cyclic number.

It is not a de Polignac number, because 21303146713 - 2⁵ = 21303146681 is a prime.

It is not a weakly prime, because it can be changed into another prime (21303146213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10651573356 + 10651573357.

It is an arithmetic number, because the mean of its divisors is an integer number (10651573357).

Almost surely, 2^21303146713 is an apocalyptic number.

It is an amenable number.

21303146713 is a deficient number, since it is larger than the sum of its proper divisors (1).

21303146713 is an equidigital number, since it uses as much as digits as its factorization.

21303146713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The spelling of 21303146713 in words is "twenty-one billion, three hundred three million, one hundred forty-six thousand, seven hundred thirteen".