Search a number
-
+
230387201 = 1120944291
BaseRepresentation
bin11011011101101…
…10111000000001
3121001111212211022
431232312320001
5432434342301
634505555225
75465154542
oct1556667001
9531455738
10230387201
11109058350
12651a5b15
13389665b5
14228524c9
151535cd1b
hexdbb6e01

230387201 has 4 divisors (see below), whose sum is σ = 251331504. Its totient is φ = 209442900.

The previous prime is 230387191. The next prime is 230387203. The reversal of 230387201 is 102783032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 230387201 - 26 = 230387137 is a prime.

It is a super-2 number, since 2×2303872012 = 106156524769228802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230387203) 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, 10472135 + ... + 10472156.

It is an arithmetic number, because the mean of its divisors is an integer number (62832876).

Almost surely, 2230387201 is an apocalyptic number.

It is an amenable number.

230387201 is a deficient number, since it is larger than the sum of its proper divisors (20944303).

230387201 is a wasteful number, since it uses less digits than its factorization.

230387201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20944302.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 230387201 is about 15178.5111588719. The cubic root of 230387201 is about 613.0361938592.

The spelling of 230387201 in words is "two hundred thirty million, three hundred eighty-seven thousand, two hundred one".

Divisors: 1 11 20944291 230387201