21344030341 has 4 divisors (see below), whose sum is σ = 21345187500. Its totient is φ = 21342873184.

The previous prime is 21344030303. The next prime is 21344030353. The reversal of 21344030341 is 14303044312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12830092900 + 8513937441 = 113270^2 + 92271^2 .

It is a cyclic number.

It is not a de Polignac number, because 21344030341 - 2²¹ = 21341933189 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 (21344030371) 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, 550456 + ... + 587953.

It is an arithmetic number, because the mean of its divisors is an integer number (5336296875).

Almost surely, 2^21344030341 is an apocalyptic number.

It is an amenable number.

21344030341 is a deficient number, since it is larger than the sum of its proper divisors (1157159).

21344030341 is a wasteful number, since it uses less digits than its factorization.

21344030341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157158.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21344030341 its reverse (14303044312), we get a palindrome (35647074653).

The spelling of 21344030341 in words is "twenty-one billion, three hundred forty-four million, thirty thousand, three hundred forty-one".