20317371 has 16 divisors (see below), whose sum is σ = 28680960. Its totient is φ = 12771360.

The previous prime is 20317361. The next prime is 20317373. The reversal of 20317371 is 17371302.

It is not a de Polignac number, because 20317371 - 2¹⁰ = 20316347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20317373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1026 + ... + 6456.

It is an arithmetic number, because the mean of its divisors is an integer number (1792560).

Almost surely, 2^20317371 is an apocalyptic number.

20317371 is a deficient number, since it is larger than the sum of its proper divisors (8363589).

20317371 is a wasteful number, since it uses less digits than its factorization.

20317371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5506.

The product of its (nonzero) digits is 882, while the sum is 24.

The square root of 20317371 is about 4507.4794508683. The cubic root of 20317371 is about 272.8700289698.

Adding to 20317371 its reverse (17371302), we get a palindrome (37688673).

The spelling of 20317371 in words is "twenty million, three hundred seventeen thousand, three hundred seventy-one".