21343100363 has 4 divisors (see below), whose sum is σ = 22984877328. Its totient is φ = 19701323400.

The previous prime is 21343100327. The next prime is 21343100407. The reversal of 21343100363 is 36300134312.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21343100363 - 2²² = 21338906059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21343100963) 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, 820888463 + ... + 820888488.

It is an arithmetic number, because the mean of its divisors is an integer number (5746219332).

Almost surely, 2^21343100363 is an apocalyptic number.

21343100363 is a deficient number, since it is larger than the sum of its proper divisors (1641776965).

21343100363 is a wasteful number, since it uses less digits than its factorization.

21343100363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641776964.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 21343100363 its reverse (36300134312), we get a palindrome (57643234675).

The spelling of 21343100363 in words is "twenty-one billion, three hundred forty-three million, one hundred thousand, three hundred sixty-three".