Search a number
-
+
7113381 = 311297433
BaseRepresentation
bin11011001000101010100101
3111101101201120
4123020222211
53310112011
6412244153
7114314502
oct33105245
914341646
107113381
114019430
122470659
131620a02
14d324a9
15957a06
hex6c8aa5

7113381 has 16 divisors (see below), whose sum is σ = 10704960. Its totient is φ = 4161920.

The previous prime is 7113373. The next prime is 7113383. The reversal of 7113381 is 1833117.

It is a cyclic number.

It is not a de Polignac number, because 7113381 - 23 = 7113373 is a prime.

It is a super-2 number, since 2×71133812 = 101200378502322, which contains 22 as substring.

7113381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7113383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2760 + ... + 4673.

It is an arithmetic number, because the mean of its divisors is an integer number (669060).

Almost surely, 27113381 is an apocalyptic number.

It is an amenable number.

7113381 is a deficient number, since it is larger than the sum of its proper divisors (3591579).

7113381 is a wasteful number, since it uses less digits than its factorization.

7113381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7476.

The product of its digits is 504, while the sum is 24.

The square root of 7113381 is about 2667.0922368752. The cubic root of 7113381 is about 192.3204014452.

Adding to 7113381 its reverse (1833117), we get a palindrome (8946498).

The spelling of 7113381 in words is "seven million, one hundred thirteen thousand, three hundred eighty-one".

Divisors: 1 3 11 29 33 87 319 957 7433 22299 81763 215557 245289 646671 2371127 7113381