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23201201 = 163714173
BaseRepresentation
bin101100010000…
…0010110110001
31121122202001202
41120200112301
521414414301
62145140545
7401130662
oct130402661
947582052
1023201201
1112107451
12792a755
134a6452a
14311d369
15208466b
hex16205b1

23201201 has 4 divisors (see below), whose sum is σ = 23217012. Its totient is φ = 23185392.

The previous prime is 23201197. The next prime is 23201251. The reversal of 23201201 is 10210232.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9333025 + 13868176 = 3055^2 + 3724^2 .

It is a cyclic number.

It is not a de Polignac number, because 23201201 - 22 = 23201197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23201251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5450 + ... + 8723.

It is an arithmetic number, because the mean of its divisors is an integer number (5804253).

Almost surely, 223201201 is an apocalyptic number.

It is an amenable number.

23201201 is a deficient number, since it is larger than the sum of its proper divisors (15811).

23201201 is a wasteful number, since it uses less digits than its factorization.

23201201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15810.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 23201201 is about 4816.7625019301. The cubic root of 23201201 is about 285.2135508315.

Adding to 23201201 its reverse (10210232), we get a palindrome (33411433).

The spelling of 23201201 in words is "twenty-three million, two hundred one thousand, two hundred one".

Divisors: 1 1637 14173 23201201