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2423231 = 17142543
BaseRepresentation
bin1001001111100110111111
311120010001022
421033212333
51110020411
6123534355
726411546
oct11174677
94503038
102423231
111405678
1298a3bb
1366ac85
1447115d
1532cedb
hex24f9bf

2423231 has 4 divisors (see below), whose sum is σ = 2565792. Its totient is φ = 2280672.

The previous prime is 2423227. The next prime is 2423233. The reversal of 2423231 is 1323242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1323242 = 2661621.

It is a cyclic number.

It is not a de Polignac number, because 2423231 - 22 = 2423227 is a prime.

It is a super-2 number, since 2×24232312 = 11744096958722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 142543 = 2423231 / (2 + 4 + 2 + 3 + 2 + 3 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2423233) 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, 71255 + ... + 71288.

It is an arithmetic number, because the mean of its divisors is an integer number (641448).

22423231 is an apocalyptic number.

2423231 is a deficient number, since it is larger than the sum of its proper divisors (142561).

2423231 is a wasteful number, since it uses less digits than its factorization.

2423231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142560.

The product of its digits is 288, while the sum is 17.

The square root of 2423231 is about 1556.6730549476. The cubic root of 2423231 is about 134.3171924417.

Adding to 2423231 its reverse (1323242), we get a palindrome (3746473).

The spelling of 2423231 in words is "two million, four hundred twenty-three thousand, two hundred thirty-one".

Divisors: 1 17 142543 2423231