21307334383 has 2 divisors, whose sum is σ = 21307334384. Its totient is φ = 21307334382.

The previous prime is 21307334357. The next prime is 21307334423. The reversal of 21307334383 is 38343370312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21307334383 - 2⁵ = 21307334351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21307034383) 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 as a sum of consecutive naturals, namely, 10653667191 + 10653667192.

It is an arithmetic number, because the mean of its divisors is an integer number (10653667192).

Almost surely, 2^21307334383 is an apocalyptic number.

21307334383 is a deficient number, since it is larger than the sum of its proper divisors (1).

21307334383 is an equidigital number, since it uses as much as digits as its factorization.

21307334383 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 37.

It can be divided in two parts, 213073 and 34383, that added together give a triangular number (247456 = T₇₀₃).

The spelling of 21307334383 in words is "twenty-one billion, three hundred seven million, three hundred thirty-four thousand, three hundred eighty-three".