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23056361 = 31772733
BaseRepresentation
bin101011111110…
…0111111101001
31121101101101022
41113330333221
521400300421
62142102225
7366655466
oct127747751
947341338
1023056361
1112018649
12787a975
134a13623
1430c266d
1520567ab
hex15fcfe9

23056361 has 4 divisors (see below), whose sum is σ = 23129412. Its totient is φ = 22983312.

The previous prime is 23056351. The next prime is 23056379. The reversal of 23056361 is 16365032.

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 11022400 + 12033961 = 3320^2 + 3469^2 .

It is a cyclic number.

It is not a de Polignac number, because 23056361 - 214 = 23039977 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23056361.

It is not an unprimeable number, because it can be changed into a prime (23056351) 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, 36050 + ... + 36683.

It is an arithmetic number, because the mean of its divisors is an integer number (5782353).

Almost surely, 223056361 is an apocalyptic number.

It is an amenable number.

23056361 is a deficient number, since it is larger than the sum of its proper divisors (73051).

23056361 is an equidigital number, since it uses as much as digits as its factorization.

23056361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73050.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 23056361 is about 4801.7039683846. The cubic root of 23056361 is about 284.6188029726.

The spelling of 23056361 in words is "twenty-three million, fifty-six thousand, three hundred sixty-one".

Divisors: 1 317 72733 23056361