20317106 has 4 divisors (see below), whose sum is σ = 30475662. Its totient is φ = 10158552.

The previous prime is 20317093. The next prime is 20317127. The reversal of 20317106 is 60171302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60171302 = 2 ⋅30085651.

It can be written as a sum of positive squares in only one way, i.e., 15928081 + 4389025 = 3991^2 + 2095^2 .

It is an unprimeable number.

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, 5079275 + ... + 5079278.

Almost surely, 2^20317106 is an apocalyptic number.

20317106 is a deficient number, since it is larger than the sum of its proper divisors (10158556).

20317106 is a wasteful number, since it uses less digits than its factorization.

20317106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10158555.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 20317106 is about 4507.4500551864. The cubic root of 20317106 is about 272.8688426143.

Adding to 20317106 its reverse (60171302), we get a palindrome (80488408).

The spelling of 20317106 in words is "twenty million, three hundred seventeen thousand, one hundred six".