Search a number
-
+
11230838239 = 71915620081
BaseRepresentation
bin10100111010110100…
…01111110111011111
31001222200210200202211
422131122033313133
5141000043310424
65054231501251
7545211356425
oct123532176737
931880720684
1011230838239
114843573aa5
122215227827
13109c9bb31a
147877dd115
1545ae8ab94
hex29d68fddf

11230838239 has 4 divisors (see below), whose sum is σ = 11246459040. Its totient is φ = 11215217440.

The previous prime is 11230838173. The next prime is 11230838249. The reversal of 11230838239 is 93283803211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93283803211 = 304130675371.

It is a cyclic number.

It is not a de Polignac number, because 11230838239 - 29 = 11230837727 is a prime.

It is a super-2 number, since 2×112308382392 (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11230838249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7809322 + ... + 7810759.

It is an arithmetic number, because the mean of its divisors is an integer number (2811614760).

Almost surely, 211230838239 is an apocalyptic number.

11230838239 is a deficient number, since it is larger than the sum of its proper divisors (15620801).

11230838239 is an equidigital number, since it uses as much as digits as its factorization.

11230838239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15620800.

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 11230838239 in words is "eleven billion, two hundred thirty million, eight hundred thirty-eight thousand, two hundred thirty-nine".

Divisors: 1 719 15620081 11230838239