21342323003 has 4 divisors (see below), whose sum is σ = 21344015808. Its totient is φ = 21340630200.

The previous prime is 21342322979. The next prime is 21342323077. The reversal of 21342323003 is 30032324312.

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 21342323003 - 2²² = 21338128699 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21342323003.

It is not an unprimeable number, because it can be changed into a prime (21342326003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 827348 + ... + 852753.

It is an arithmetic number, because the mean of its divisors is an integer number (5336003952).

Almost surely, 2^21342323003 is an apocalyptic number.

21342323003 is a deficient number, since it is larger than the sum of its proper divisors (1692805).

21342323003 is a wasteful number, since it uses less digits than its factorization.

21342323003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692804.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 21342323003 its reverse (30032324312), we get a palindrome (51374647315).

The spelling of 21342323003 in words is "twenty-one billion, three hundred forty-two million, three hundred twenty-three thousand, three".