Search a number
-
+
103643417 = 809128113
BaseRepresentation
bin1100010110101…
…11100100011001
321020000122001002
412023113210121
5203013042132
614141234345
72365645253
oct613274431
9236018032
10103643417
115355a919
122a8629b5
131861ac87
14da9ccd3
159174262
hex62d7919

103643417 has 4 divisors (see below), whose sum is σ = 103772340. Its totient is φ = 103514496.

The previous prime is 103643399. The next prime is 103643431. The reversal of 103643417 is 714346301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 714346301 = 1171610031.

It can be written as a sum of positive squares in 2 ways, for example, as 50993881 + 52649536 = 7141^2 + 7256^2 .

It is a cyclic number.

It is not a de Polignac number, because 103643417 - 222 = 99449113 is a prime.

It is a super-3 number, since 3×1036434173 (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103643417.

It is not an unprimeable number, because it can be changed into a prime (103643017) 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, 63248 + ... + 64865.

It is an arithmetic number, because the mean of its divisors is an integer number (25943085).

Almost surely, 2103643417 is an apocalyptic number.

It is an amenable number.

103643417 is a deficient number, since it is larger than the sum of its proper divisors (128923).

103643417 is an equidigital number, since it uses as much as digits as its factorization.

103643417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128922.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 103643417 is about 10180.5410956393. The cubic root of 103643417 is about 469.7288567355.

Adding to 103643417 its reverse (714346301), we get a palindrome (817989718).

The spelling of 103643417 in words is "one hundred three million, six hundred forty-three thousand, four hundred seventeen".

Divisors: 1 809 128113 103643417