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23123133 = 3211192647
BaseRepresentation
bin101100000110…
…1010010111101
31121111202222100
41120031102331
521404420013
62143335313
7400354245
oct130152275
947452870
1023123133
1112063830
1278b1539
134a37b37
1430dcb25
15206b473
hex160d4bd

23123133 has 36 divisors (see below), whose sum is σ = 38514528. Its totient is φ = 13255920.

The previous prime is 23123071. The next prime is 23123143. The reversal of 23123133 is 33132132.

It is not a de Polignac number, because 23123133 - 28 = 23122877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23123143) 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 35 ways as a sum of consecutive naturals, for example, 35416 + ... + 36062.

It is an arithmetic number, because the mean of its divisors is an integer number (1069848).

Almost surely, 223123133 is an apocalyptic number.

It is an amenable number.

23123133 is a deficient number, since it is larger than the sum of its proper divisors (15391395).

23123133 is a wasteful number, since it uses less digits than its factorization.

23123133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702 (or 680 counting only the distinct ones).

The product of its digits is 324, while the sum is 18.

The square root of 23123133 is about 4808.6518900831. The cubic root of 23123133 is about 284.8932933864.

Adding to 23123133 its reverse (33132132), we get a palindrome (56255265).

It can be divided in two parts, 2312 and 3133, that added together give a palindrome (5445).

The spelling of 23123133 in words is "twenty-three million, one hundred twenty-three thousand, one hundred thirty-three".

Divisors: 1 3 9 11 19 33 57 99 171 209 361 627 647 1083 1881 1941 3249 3971 5823 7117 11913 12293 21351 35739 36879 64053 110637 135223 233567 405669 700701 1217007 2102103 2569237 7707711 23123133