20030117 has 2 divisors, whose sum is σ = 20030118. Its totient is φ = 20030116.

The previous prime is 20030107. The next prime is 20030137. The reversal of 20030117 is 71103002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14032516 + 5997601 = 3746^2 + 2449^2 .

It is a cyclic number.

It is not a de Polignac number, because 20030117 - 2⁶ = 20030053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20030107) 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, 10015058 + 10015059.

It is an arithmetic number, because the mean of its divisors is an integer number (10015059).

Almost surely, 2^20030117 is an apocalyptic number.

It is an amenable number.

20030117 is a deficient number, since it is larger than the sum of its proper divisors (1).

20030117 is an equidigital number, since it uses as much as digits as its factorization.

20030117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 20030117 is about 4475.5018712989. The cubic root of 20030117 is about 271.5779435181.

Adding to 20030117 its reverse (71103002), we get a palindrome (91133119).

The spelling of 20030117 in words is "twenty million, thirty thousand, one hundred seventeen".