20239317 has 24 divisors (see below), whose sum is σ = 33718464. Its totient is φ = 11458944.

The previous prime is 20239277. The next prime is 20239321. The reversal of 20239317 is 71393202.

It is not a de Polignac number, because 20239317 - 2⁶ = 20239253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20239327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5698 + ... + 8540.

It is an arithmetic number, because the mean of its divisors is an integer number (1404936).

Almost surely, 2^20239317 is an apocalyptic number.

It is an amenable number.

20239317 is a deficient number, since it is larger than the sum of its proper divisors (13479147).

20239317 is a wasteful number, since it uses less digits than its factorization.

20239317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969 (or 2966 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 20239317 is about 4498.8128434066. The cubic root of 20239317 is about 272.5201488903.

The spelling of 20239317 in words is "twenty million, two hundred thirty-nine thousand, three hundred seventeen".