20848231 has 2 divisors, whose sum is σ = 20848232. Its totient is φ = 20848230.

The previous prime is 20848211. The next prime is 20848237. The reversal of 20848231 is 13284802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20848231 - 2⁵ = 20848199 is a prime.

It is a super-2 number, since 2×20848231² = 869297471658722, 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 20848231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20848237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10424115 + 10424116.

It is an arithmetic number, because the mean of its divisors is an integer number (10424116).

Almost surely, 2^20848231 is an apocalyptic number.

20848231 is a deficient number, since it is larger than the sum of its proper divisors (1).

20848231 is an equidigital number, since it uses as much as digits as its factorization.

20848231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 20848231 is about 4565.9863118498. The cubic root of 20848231 is about 275.2261764624.

The spelling of 20848231 in words is "twenty million, eight hundred forty-eight thousand, two hundred thirty-one".