Search a number
-
+
2243423231 = 71153277961
BaseRepresentation
bin1000010110110111…
…1110101111111111
312210100101201010022
42011231332233333
514043304020411
61010340202355
7106410532340
oct20555765777
95710351108
102243423231
11a51399095
125273993bb
13299a2638a
14173d420c7
15d1e47edb
hex85b7ebff

2243423231 has 8 divisors (see below), whose sum is σ = 2566145184. Its totient is φ = 1921259520.

The previous prime is 2243423201. The next prime is 2243423249. The reversal of 2243423231 is 1323243422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2243423231 - 218 = 2243161087 is a prime.

It is a super-2 number, since 2×22434232312 = 10065895586780958722, which contains 22 as substring.

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 2243423231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243423201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130910 + ... + 147051.

It is an arithmetic number, because the mean of its divisors is an integer number (320768148).

Almost surely, 22243423231 is an apocalyptic number.

2243423231 is a deficient number, since it is larger than the sum of its proper divisors (322721953).

2243423231 is a wasteful number, since it uses less digits than its factorization.

2243423231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279121.

The product of its digits is 6912, while the sum is 26.

The square root of 2243423231 is about 47364.7889365085. The cubic root of 2243423231 is about 1309.0927095673.

Adding to 2243423231 its reverse (1323243422), we get a palindrome (3566666653).

The spelling of 2243423231 in words is "two billion, two hundred forty-three million, four hundred twenty-three thousand, two hundred thirty-one".

Divisors: 1 7 1153 8071 277961 1945727 320489033 2243423231