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23213601 = 3323291289
BaseRepresentation
bin101100010001…
…1011000100001
31121200101002000
41120203120201
521420313401
62145314213
7401212065
oct130433041
947611060
1023213601
11121157a4
127935969
134a6a078
143123aa5
152088186
hex1623621

23213601 has 32 divisors (see below), whose sum is σ = 37152000. Its totient is φ = 14281344.

The previous prime is 23213599. The next prime is 23213623. The reversal of 23213601 is 10631232.

It is not a de Polignac number, because 23213601 - 21 = 23213599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23213651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17365 + ... + 18653.

It is an arithmetic number, because the mean of its divisors is an integer number (1161000).

Almost surely, 223213601 is an apocalyptic number.

It is an amenable number.

23213601 is a deficient number, since it is larger than the sum of its proper divisors (13938399).

23213601 is a wasteful number, since it uses less digits than its factorization.

23213601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350 (or 1344 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 23213601 is about 4818.0495016137. The cubic root of 23213601 is about 285.2643530602.

Adding to 23213601 its reverse (10631232), we get a palindrome (33844833).

The spelling of 23213601 in words is "twenty-three million, two hundred thirteen thousand, six hundred one".

Divisors: 1 3 9 23 27 29 69 87 207 261 621 667 783 1289 2001 3867 6003 11601 18009 29647 34803 37381 88941 112143 266823 336429 800469 859763 1009287 2579289 7737867 23213601