21323001319 has 2 divisors, whose sum is σ = 21323001320. Its totient is φ = 21323001318.

The previous prime is 21323001289. The next prime is 21323001353. The reversal of 21323001319 is 91310032312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21323001319 - 2⁹ = 21323000807 is a prime.

It is a super-2 number, since 2×21323001319² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21323001293 and 21323001302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21323002319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10661500659 + 10661500660.

It is an arithmetic number, because the mean of its divisors is an integer number (10661500660).

Almost surely, 2^21323001319 is an apocalyptic number.

21323001319 is a deficient number, since it is larger than the sum of its proper divisors (1).

21323001319 is an equidigital number, since it uses as much as digits as its factorization.

21323001319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 21323001319 in words is "twenty-one billion, three hundred twenty-three million, one thousand, three hundred nineteen".