21232450343 has 8 divisors (see below), whose sum is σ = 23603319936. Its totient is φ = 18966952800.

The previous prime is 21232450331. The next prime is 21232450367. The reversal of 21232450343 is 34305423212.

It is a happy number.

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 21232450343 - 2⁶ = 21232450279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232450303) 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, 26342588 + ... + 26343393.

It is an arithmetic number, because the mean of its divisors is an integer number (2950414992).

Almost surely, 2^21232450343 is an apocalyptic number.

21232450343 is a deficient number, since it is larger than the sum of its proper divisors (2370869593).

21232450343 is a wasteful number, since it uses less digits than its factorization.

21232450343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52686025.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 21232450343 its reverse (34305423212), we get a palindrome (55537873555).

The spelling of 21232450343 in words is "twenty-one billion, two hundred thirty-two million, four hundred fifty thousand, three hundred forty-three".