21342001323 has 8 divisors (see below), whose sum is σ = 29693219328. Its totient is φ = 13609392104.

The previous prime is 21342001319. The next prime is 21342001327. The reversal of 21342001323 is 32310024312.

It is an interprime number because it is at equal distance from previous prime (21342001319) and next prime (21342001327).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21342001323 - 2² = 21342001319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21342001323.

It is not an unprimeable number, because it can be changed into a prime (21342001327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154652115 + ... + 154652252.

It is an arithmetic number, because the mean of its divisors is an integer number (3711652416).

Almost surely, 2^21342001323 is an apocalyptic number.

21342001323 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21342001323 is a deficient number, since it is larger than the sum of its proper divisors (8351218005).

21342001323 is a wasteful number, since it uses less digits than its factorization.

21342001323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309304393.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21342001323 its reverse (32310024312), we get a palindrome (53652025635).

The spelling of 21342001323 in words is "twenty-one billion, three hundred forty-two million, one thousand, three hundred twenty-three".