21304542341 has 8 divisors (see below), whose sum is σ = 22983369624. Its totient is φ = 19673006080.

The previous prime is 21304542323. The next prime is 21304542359. The reversal of 21304542341 is 14324540312.

It is an interprime number because it is at equal distance from previous prime (21304542323) and next prime (21304542359).

It can be written as a sum of positive squares in 4 ways, for example, as 13546632100 + 7757910241 = 116390^2 + 88079^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21304542341 - 2⁶ = 21304542277 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 (21304542361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11821820 + ... + 11823621.

It is an arithmetic number, because the mean of its divisors is an integer number (2872921203).

Almost surely, 2^21304542341 is an apocalyptic number.

It is an amenable number.

21304542341 is a deficient number, since it is larger than the sum of its proper divisors (1678827283).

21304542341 is a wasteful number, since it uses less digits than its factorization.

21304542341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23645511.

The product of its (nonzero) digits is 11520, while the sum is 29.

The spelling of 21304542341 in words is "twenty-one billion, three hundred four million, five hundred forty-two thousand, three hundred forty-one".