21343301343 has 48 divisors (see below), whose sum is σ = 38463530560. Its totient is φ = 11103754752.

The previous prime is 21343301327. The next prime is 21343301359. The reversal of 21343301343 is 34310334312.

21343301343 is a `hidden beast` number, since 2 + 13 + 4 + 3 + 301 + 343 = 666.

It is an interprime number because it is at equal distance from previous prime (21343301327) and next prime (21343301359).

It is not a de Polignac number, because 21343301343 - 2⁴ = 21343301327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21343301393) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 118708 + ... + 238281.

Almost surely, 2^21343301343 is an apocalyptic number.

21343301343 is a deficient number, since it is larger than the sum of its proper divisors (17120229217).

21343301343 is a wasteful number, since it uses less digits than its factorization.

21343301343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357088 (or 357085 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 21343301343 its reverse (34310334312), we get a palindrome (55653635655).

The spelling of 21343301343 in words is "twenty-one billion, three hundred forty-three million, three hundred one thousand, three hundred forty-three".