20636050331 has 4 divisors (see below), whose sum is σ = 22223438832. Its totient is φ = 19048661832.

The previous prime is 20636050319. The next prime is 20636050349. The reversal of 20636050331 is 13305063602.

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 20636050331 - 2¹⁰ = 20636049307 is a prime.

It is a super-2 number, since 2×20636050331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20636050294 and 20636050303.

It is not an unprimeable number, because it can be changed into a prime (20636050361) 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, 793694231 + ... + 793694256.

It is an arithmetic number, because the mean of its divisors is an integer number (5555859708).

Almost surely, 2^20636050331 is an apocalyptic number.

20636050331 is a deficient number, since it is larger than the sum of its proper divisors (1587388501).

20636050331 is a wasteful number, since it uses less digits than its factorization.

20636050331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587388500.

The product of its (nonzero) digits is 9720, while the sum is 29.

The spelling of 20636050331 in words is "twenty billion, six hundred thirty-six million, fifty thousand, three hundred thirty-one".