21304314803 has 2 divisors, whose sum is σ = 21304314804. Its totient is φ = 21304314802.

The previous prime is 21304314799. The next prime is 21304314839. The reversal of 21304314803 is 30841340312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21304314803 - 2² = 21304314799 is a prime.

It is not a weakly prime, because it can be changed into another prime (21304314403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10652157401 + 10652157402.

It is an arithmetic number, because the mean of its divisors is an integer number (10652157402).

Almost surely, 2^21304314803 is an apocalyptic number.

21304314803 is a deficient number, since it is larger than the sum of its proper divisors (1).

21304314803 is an equidigital number, since it uses as much as digits as its factorization.

21304314803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 21304314803 in words is "twenty-one billion, three hundred four million, three hundred fourteen thousand, eight hundred three".