21342310413 has 4 divisors (see below), whose sum is σ = 28456413888. Its totient is φ = 14228206940.

The previous prime is 21342310411. The next prime is 21342310421. The reversal of 21342310413 is 31401324312.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21342310413 - 2¹ = 21342310411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21342310411) 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, 3557051733 + ... + 3557051738.

It is an arithmetic number, because the mean of its divisors is an integer number (7114103472).

Almost surely, 2^21342310413 is an apocalyptic number.

It is an amenable number.

21342310413 is a deficient number, since it is larger than the sum of its proper divisors (7114103475).

21342310413 is an equidigital number, since it uses as much as digits as its factorization.

21342310413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7114103474.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21342310413 its reverse (31401324312), we get a palindrome (52743634725).

The spelling of 21342310413 in words is "twenty-one billion, three hundred forty-two million, three hundred ten thousand, four hundred thirteen".