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23123223 = 322639769
BaseRepresentation
bin101100000110…
…1010100010111
31121111210002200
41120031110113
521404420343
62143335543
7400354434
oct130152427
947453080
1023123223
1112063902
1278b15b3
134a37ba6
1430dcb8b
15206b4d3
hex160d517

23123223 has 12 divisors (see below), whose sum is σ = 33530640. Its totient is φ = 15355296.

The previous prime is 23123189. The next prime is 23123231. The reversal of 23123223 is 32232132.

It is a happy number.

It is not a de Polignac number, because 23123223 - 26 = 23123159 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23123196 and 23123205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23123273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2518 + ... + 7251.

It is an arithmetic number, because the mean of its divisors is an integer number (2794220).

Almost surely, 223123223 is an apocalyptic number.

23123223 is a deficient number, since it is larger than the sum of its proper divisors (10407417).

23123223 is a wasteful number, since it uses less digits than its factorization.

23123223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10038 (or 10035 counting only the distinct ones).

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

The square root of 23123223 is about 4808.6612482062. The cubic root of 23123223 is about 284.8936630070.

Adding to 23123223 its reverse (32232132), we get a palindrome (55355355).

It can be divided in two parts, 2312322 and 3, that added together give a triangular number (2312325 = T2150).

The spelling of 23123223 in words is "twenty-three million, one hundred twenty-three thousand, two hundred twenty-three".

Divisors: 1 3 9 263 789 2367 9769 29307 87921 2569247 7707741 23123223