Search a number
-
+
23133121 = 112103011
BaseRepresentation
bin101100000111…
…1101111000001
31121112021200021
41120033233001
521410224441
62143453441
7400425334
oct130175701
947467607
1023133121
1112070290
1278b7281
134a3c54b
14310261b
15206e3d1
hex160fbc1

23133121 has 4 divisors (see below), whose sum is σ = 25236144. Its totient is φ = 21030100.

The previous prime is 23133109. The next prime is 23133139. The reversal of 23133121 is 12133132.

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.

It is a cyclic number.

It is not a de Polignac number, because 23133121 - 215 = 23100353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23133095 and 23133104.

It is not an unprimeable number, because it can be changed into a prime (23133151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1051495 + ... + 1051516.

It is an arithmetic number, because the mean of its divisors is an integer number (6309036).

Almost surely, 223133121 is an apocalyptic number.

It is an amenable number.

23133121 is a deficient number, since it is larger than the sum of its proper divisors (2103023).

23133121 is a wasteful number, since it uses less digits than its factorization.

23133121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103022.

The product of its digits is 108, while the sum is 16.

The square root of 23133121 is about 4809.6903226715. The cubic root of 23133121 is about 284.9343072145.

Adding to 23133121 its reverse (12133132), we get a palindrome (35266253).

The spelling of 23133121 in words is "twenty-three million, one hundred thirty-three thousand, one hundred twenty-one".

Divisors: 1 11 2103011 23133121