20050231 has 4 divisors (see below), whose sum is σ = 20061432. Its totient is φ = 20039032.

The previous prime is 20050213. The next prime is 20050241. The reversal of 20050231 is 13205002.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 13205002 = 2 ⋅6602501.

It is a cyclic number.

It is not a de Polignac number, because 20050231 - 2⁷ = 20050103 is a prime.

It is a super-2 number, since 2×20050231² = 804023526306722, which contains 22 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 (20050201) 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, 2245 + ... + 6718.

It is an arithmetic number, because the mean of its divisors is an integer number (5015358).

Almost surely, 2^20050231 is an apocalyptic number.

20050231 is a deficient number, since it is larger than the sum of its proper divisors (11201).

20050231 is an equidigital number, since it uses as much as digits as its factorization.

20050231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11200.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 20050231 is about 4477.7484297356. The cubic root of 20050231 is about 271.6688181963.

Adding to 20050231 its reverse (13205002), we get a palindrome (33255233).

The spelling of 20050231 in words is "twenty million, fifty thousand, two hundred thirty-one".