20293171 has 2 divisors, whose sum is σ = 20293172. Its totient is φ = 20293170.

The previous prime is 20293151. The next prime is 20293201. The reversal of 20293171 is 17139202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20293171 - 2⁵ = 20293139 is a prime.

It is not a weakly prime, because it can be changed into another prime (20293111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10146585 + 10146586.

It is an arithmetic number, because the mean of its divisors is an integer number (10146586).

Almost surely, 2^20293171 is an apocalyptic number.

20293171 is a deficient number, since it is larger than the sum of its proper divisors (1).

20293171 is an equidigital number, since it uses as much as digits as its factorization.

20293171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 20293171 is about 4504.7942239352. The cubic root of 20293171 is about 272.7616475224.

The spelling of 20293171 in words is "twenty million, two hundred ninety-three thousand, one hundred seventy-one".