20321110471 has 4 divisors (see below), whose sum is σ = 20335233600. Its totient is φ = 20306987344.

The previous prime is 20321110427. The next prime is 20321110477. The reversal of 20321110471 is 17401112302.

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 20321110471 - 2⁹ = 20321109959 is a prime.

It is a super-3 number, since 3×20321110471³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321110477) 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, 7059406 + ... + 7062283.

It is an arithmetic number, because the mean of its divisors is an integer number (5083808400).

Almost surely, 2^20321110471 is an apocalyptic number.

20321110471 is a deficient number, since it is larger than the sum of its proper divisors (14123129).

20321110471 is a wasteful number, since it uses less digits than its factorization.

20321110471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14123128.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 20321110471 its reverse (17401112302), we get a palindrome (37722222773).

The spelling of 20321110471 in words is "twenty billion, three hundred twenty-one million, one hundred ten thousand, four hundred seventy-one".