20323417 has 4 divisors (see below), whose sum is σ = 20551860. Its totient is φ = 20094976.

The previous prime is 20323379. The next prime is 20323423. The reversal of 20323417 is 71432302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71432302 = 2 ⋅35716151.

It can be written as a sum of positive squares in 2 ways, for example, as 11861136 + 8462281 = 3444^2 + 2909^2 .

It is a cyclic number.

It is not a de Polignac number, because 20323417 - 2¹¹ = 20321369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20323427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114088 + ... + 114265.

It is an arithmetic number, because the mean of its divisors is an integer number (5137965).

Almost surely, 2^20323417 is an apocalyptic number.

It is an amenable number.

20323417 is a deficient number, since it is larger than the sum of its proper divisors (228443).

20323417 is an equidigital number, since it uses as much as digits as its factorization.

20323417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228442.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 20323417 is about 4508.1500640507. The cubic root of 20323417 is about 272.8970929795.

Adding to 20323417 its reverse (71432302), we get a palindrome (91755719).

The spelling of 20323417 in words is "twenty million, three hundred twenty-three thousand, four hundred seventeen".