20363117 has 4 divisors (see below), whose sum is σ = 21434880. Its totient is φ = 19291356.

The previous prime is 20363107. The next prime is 20363141. The reversal of 20363117 is 71136302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71136302 = 2 ⋅35568151.

It is a cyclic number.

It is not a de Polignac number, because 20363117 - 2¹² = 20359021 is a prime.

It is a Duffinian number.

It is a zygodrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 20363092 and 20363101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20363107) 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, 535853 + ... + 535890.

It is an arithmetic number, because the mean of its divisors is an integer number (5358720).

Almost surely, 2^20363117 is an apocalyptic number.

It is an amenable number.

20363117 is a deficient number, since it is larger than the sum of its proper divisors (1071763).

20363117 is a wasteful number, since it uses less digits than its factorization.

20363117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071762.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 20363117 is about 4512.5510523428. The cubic root of 20363117 is about 273.0746708577.

Adding to 20363117 its reverse (71136302), we get a palindrome (91499419).

The spelling of 20363117 in words is "twenty million, three hundred sixty-three thousand, one hundred seventeen".