21342232303 has 16 divisors (see below), whose sum is σ = 24930791424. Its totient is φ = 17889238080.

The previous prime is 21342232297. The next prime is 21342232319. The reversal of 21342232303 is 30323224312.

It is not a de Polignac number, because 21342232303 - 2²⁹ = 20805361391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21342232333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 378651 + ... + 431347.

It is an arithmetic number, because the mean of its divisors is an integer number (1558174464).

Almost surely, 2^21342232303 is an apocalyptic number.

21342232303 is a deficient number, since it is larger than the sum of its proper divisors (3588559121).

21342232303 is a wasteful number, since it uses less digits than its factorization.

21342232303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53982.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 21342232303 its reverse (30323224312), we get a palindrome (51665456615).

The spelling of 21342232303 in words is "twenty-one billion, three hundred forty-two million, two hundred thirty-two thousand, three hundred three".