20083391 has 2 divisors, whose sum is σ = 20083392. Its totient is φ = 20083390.

The previous prime is 20083369. The next prime is 20083403. The reversal of 20083391 is 19338002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20083391 - 2¹⁰ = 20082367 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20083391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20080391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10041695 + 10041696.

It is an arithmetic number, because the mean of its divisors is an integer number (10041696).

Almost surely, 2^20083391 is an apocalyptic number.

20083391 is a deficient number, since it is larger than the sum of its proper divisors (1).

20083391 is an equidigital number, since it uses as much as digits as its factorization.

20083391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 20083391 is about 4481.4496538509. The cubic root of 20083391 is about 271.8185018637.

It can be divided in two parts, 200 and 83391, that multiplied together give a triangular number (16678200 = T₅₇₇₅).

The spelling of 20083391 in words is "twenty million, eighty-three thousand, three hundred ninety-one".