21713531041 has 8 divisors (see below), whose sum is σ = 22682490624. Its totient is φ = 20746645920.

The previous prime is 21713531039. The next prime is 21713531053. The reversal of 21713531041 is 14013531712.

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 21713531041 - 2¹ = 21713531039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21713531011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497196 + ... + 539101.

It is an arithmetic number, because the mean of its divisors is an integer number (2835311328).

Almost surely, 2^21713531041 is an apocalyptic number.

It is an amenable number.

21713531041 is a deficient number, since it is larger than the sum of its proper divisors (968959583).

21713531041 is a wasteful number, since it uses less digits than its factorization.

21713531041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037231.

The product of its (nonzero) digits is 2520, while the sum is 28.

The spelling of 21713531041 in words is "twenty-one billion, seven hundred thirteen million, five hundred thirty-one thousand, forty-one".