20050831 has 8 divisors (see below), whose sum is σ = 20749824. Its totient is φ = 19355160.

The previous prime is 20050829. The next prime is 20050843. The reversal of 20050831 is 13805002.

It is a happy number.

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

It is not a de Polignac number, because 20050831 - 2¹ = 20050829 is a prime.

It is a super-2 number, since 2×20050831² = 804071647581122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20050799 and 20050808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20050031) 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, 20700 + ... + 21646.

It is an arithmetic number, because the mean of its divisors is an integer number (2593728).

Almost surely, 2^20050831 is an apocalyptic number.

20050831 is a deficient number, since it is larger than the sum of its proper divisors (698993).

20050831 is an equidigital number, since it uses as much as digits as its factorization.

20050831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 20050831 is about 4477.8154271921. The cubic root of 20050831 is about 271.6715280515.

Adding to 20050831 its reverse (13805002), we get a palindrome (33855833).

The spelling of 20050831 in words is "twenty million, fifty thousand, eight hundred thirty-one".