21304054283 has 2 divisors, whose sum is σ = 21304054284. Its totient is φ = 21304054282.

The previous prime is 21304054259. The next prime is 21304054301. The reversal of 21304054283 is 38245040312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21304054283 - 2⁸ = 21304054027 is a prime.

It is not a weakly prime, because it can be changed into another prime (21304074283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10652027141 + 10652027142.

It is an arithmetic number, because the mean of its divisors is an integer number (10652027142).

Almost surely, 2^21304054283 is an apocalyptic number.

21304054283 is a deficient number, since it is larger than the sum of its proper divisors (1).

21304054283 is an equidigital number, since it uses as much as digits as its factorization.

21304054283 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 21304054283 its reverse (38245040312), we get a palindrome (59549094595).

The spelling of 21304054283 in words is "twenty-one billion, three hundred four million, fifty-four thousand, two hundred eighty-three".