20250231 has 16 divisors (see below), whose sum is σ = 27617280. Its totient is φ = 13194720.

The previous prime is 20250229. The next prime is 20250239. The reversal of 20250231 is 13205202.

It is not a de Polignac number, because 20250231 - 2¹ = 20250229 is a prime.

It is a super-2 number, since 2×20250231² = 820143711106722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20250231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20250239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43506 + ... + 43968.

It is an arithmetic number, because the mean of its divisors is an integer number (1726080).

Almost surely, 2^20250231 is an apocalyptic number.

20250231 is a deficient number, since it is larger than the sum of its proper divisors (7367049).

20250231 is a wasteful number, since it uses less digits than its factorization.

20250231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 20250231 is about 4500.0256665935. The cubic root of 20250231 is about 272.5691253526.

Adding to 20250231 its reverse (13205202), we get a palindrome (33455433).

The spelling of 20250231 in words is "twenty million, two hundred fifty thousand, two hundred thirty-one".