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23023143 = 3311136789
BaseRepresentation
bin101011111010…
…0111000100111
31121022200211000
41113310320213
521343220033
62141244343
7366456603
oct127647047
947280730
1023023143
1111aa56a0
1278636b3
134a01480
1430b4503
15204ba13
hex15f4e27

23023143 has 64 divisors (see below), whose sum is σ = 41126400. Its totient is φ = 12545280.

The previous prime is 23023127. The next prime is 23023183. The reversal of 23023143 is 34132032.

It is not a de Polignac number, because 23023143 - 24 = 23023127 is a prime.

It is a super-2 number, since 2×230231432 = 1060130227196898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23023123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 258643 + ... + 258731.

It is an arithmetic number, because the mean of its divisors is an integer number (642600).

Almost surely, 223023143 is an apocalyptic number.

23023143 is a deficient number, since it is larger than the sum of its proper divisors (18103257).

23023143 is a wasteful number, since it uses less digits than its factorization.

23023143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 23023143 is about 4798.2437412037. The cubic root of 23023143 is about 284.4820509575.

Adding to 23023143 its reverse (34132032), we get a palindrome (57155175).

Subtracting 23023143 from its reverse (34132032), we obtain a square (11108889 = 33332).

It can be divided in two parts, 2302 and 3143, that added together give a palindrome (5445).

The spelling of 23023143 in words is "twenty-three million, twenty-three thousand, one hundred forty-three".

Divisors: 1 3 9 11 13 27 33 39 67 89 99 117 143 201 267 297 351 429 603 737 801 871 979 1157 1287 1809 2211 2403 2613 2937 3471 3861 5963 6633 7839 8811 9581 10413 12727 17889 19899 23517 26433 28743 31239 38181 53667 65593 77519 86229 114543 161001 196779 232557 258687 343629 590337 697671 852709 1771011 2093013 2558127 7674381 23023143