20850231 has 8 divisors (see below), whose sum is σ = 27985024. Its totient is φ = 13807800.

The previous prime is 20850223. The next prime is 20850241. The reversal of 20850231 is 13205802.

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

It is not a de Polignac number, because 20850231 - 2³ = 20850223 is a prime.

It is a super-2 number, since 2×20850231² = 869464265506722, 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 = 20850198 and 20850207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20850241) 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, 22561 + ... + 23466.

It is an arithmetic number, because the mean of its divisors is an integer number (3498128).

Almost surely, 2^20850231 is an apocalyptic number.

20850231 is a deficient number, since it is larger than the sum of its proper divisors (7134793).

20850231 is a wasteful number, since it uses less digits than its factorization.

20850231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46181.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 20850231 is about 4566.2053173286. The cubic root of 20850231 is about 275.2349771252.

The spelling of 20850231 in words is "twenty million, eight hundred fifty thousand, two hundred thirty-one".