21344030343 has 6 divisors (see below), whose sum is σ = 30830266064. Its totient is φ = 14229353556.

The previous prime is 21344030303. The next prime is 21344030353. The reversal of 21344030343 is 34303044312.

21344030343 is a `hidden beast` number, since 213 + 4 + 403 + 0 + 3 + 43 = 666.

It is not a de Polignac number, because 21344030343 - 2¹³ = 21344022151 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 (21344030303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1185779455 + ... + 1185779472.

Almost surely, 2^21344030343 is an apocalyptic number.

21344030343 is a deficient number, since it is larger than the sum of its proper divisors (9486235721).

21344030343 is a wasteful number, since it uses less digits than its factorization.

21344030343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2371558933 (or 2371558930 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 21344030343 its reverse (34303044312), we get a palindrome (55647074655).

The spelling of 21344030343 in words is "twenty-one billion, three hundred forty-four million, thirty thousand, three hundred forty-three".