21104032311 has 12 divisors (see below), whose sum is σ = 30498969592. Its totient is φ = 14062262256.

The previous prime is 21104032303. The next prime is 21104032321. The reversal of 21104032311 is 11323040112.

21104032311 is a `hidden beast` number, since 21 + 10 + 403 + 231 + 1 = 666.

It is not a de Polignac number, because 21104032311 - 2³ = 21104032303 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 (21104032321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 572176 + ... + 607941.

Almost surely, 2^21104032311 is an apocalyptic number.

21104032311 is a deficient number, since it is larger than the sum of its proper divisors (9394937281).

21104032311 is a wasteful number, since it uses less digits than its factorization.

21104032311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182110 (or 1182107 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21104032311 its reverse (11323040112), we get a palindrome (32427072423).

The spelling of 21104032311 in words is "twenty-one billion, one hundred four million, thirty-two thousand, three hundred eleven".