21343343203 has 8 divisors (see below), whose sum is σ = 26268730208. Its totient is φ = 16887040704.

The previous prime is 21343343167. The next prime is 21343343251. The reversal of 21343343203 is 30234334312.

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 21343343203 - 2¹³ = 21343335011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21343343503) 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, 117271026 + ... + 117271207.

It is an arithmetic number, because the mean of its divisors is an integer number (3283591276).

Almost surely, 2^21343343203 is an apocalyptic number.

21343343203 is a deficient number, since it is larger than the sum of its proper divisors (4925387005).

21343343203 is a wasteful number, since it uses less digits than its factorization.

21343343203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234542253.

The product of its (nonzero) digits is 15552, while the sum is 28.

Adding to 21343343203 its reverse (30234334312), we get a palindrome (51577677515).

The spelling of 21343343203 in words is "twenty-one billion, three hundred forty-three million, three hundred forty-three thousand, two hundred three".