21310483307 has 4 divisors (see below), whose sum is σ = 21324758400. Its totient is φ = 21296208216.

The previous prime is 21310483303. The next prime is 21310483321. The reversal of 21310483307 is 70338401312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21310483307 - 2² = 21310483303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21310483303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7135307 + ... + 7138292.

It is an arithmetic number, because the mean of its divisors is an integer number (5331189600).

Almost surely, 2^21310483307 is an apocalyptic number.

21310483307 is a deficient number, since it is larger than the sum of its proper divisors (14275093).

21310483307 is a wasteful number, since it uses less digits than its factorization.

21310483307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14275092.

The product of its (nonzero) digits is 12096, while the sum is 32.

Adding to 21310483307 its reverse (70338401312), we get a palindrome (91648884619).

The spelling of 21310483307 in words is "twenty-one billion, three hundred ten million, four hundred eighty-three thousand, three hundred seven".