20103289 has 2 divisors, whose sum is σ = 20103290. Its totient is φ = 20103288.

The previous prime is 20103277. The next prime is 20103301. The reversal of 20103289 is 98230102.

It is a balanced prime because it is at equal distance from previous prime (20103277) and next prime (20103301).

It can be written as a sum of positive squares in only one way, i.e., 13446889 + 6656400 = 3667^2 + 2580^2 .

It is a cyclic number.

It is not a de Polignac number, because 20103289 - 2²¹ = 18006137 is a prime.

It is not a weakly prime, because it can be changed into another prime (20103269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051644 + 10051645.

It is an arithmetic number, because the mean of its divisors is an integer number (10051645).

Almost surely, 2^20103289 is an apocalyptic number.

It is an amenable number.

20103289 is a deficient number, since it is larger than the sum of its proper divisors (1).

20103289 is an equidigital number, since it uses as much as digits as its factorization.

20103289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 20103289 is about 4483.6691447965. The cubic root of 20103289 is about 271.9082420092.

The spelling of 20103289 in words is "twenty million, one hundred three thousand, two hundred eighty-nine".