Search a number
-
+
430243023 = 3720487763
BaseRepresentation
bin11001101001001…
…111110011001111
31002222120121110210
4121221033303033
51340120234043
6110405333503
713443001560
oct3151176317
91088517423
10430243023
11200951a51
12100107293
136b1a0092
14411d8167
1527b89633
hex19a4fccf

430243023 has 8 divisors (see below), whose sum is σ = 655608448. Its totient is φ = 245853144.

The previous prime is 430243019. The next prime is 430243039. The reversal of 430243023 is 320342034.

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

It is not a de Polignac number, because 430243023 - 22 = 430243019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 20487763 = 430243023 / (4 + 3 + 0 + 2 + 4 + 3 + 0 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (430243063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10243861 + ... + 10243902.

It is an arithmetic number, because the mean of its divisors is an integer number (81951056).

Almost surely, 2430243023 is an apocalyptic number.

430243023 is a deficient number, since it is larger than the sum of its proper divisors (225365425).

430243023 is a wasteful number, since it uses less digits than its factorization.

430243023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20487773.

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 430243023 is about 20742.3003304841. The cubic root of 430243023 is about 754.9263983921.

Adding to 430243023 its reverse (320342034), we get a palindrome (750585057).

The spelling of 430243023 in words is "four hundred thirty million, two hundred forty-three thousand, twenty-three".

Divisors: 1 3 7 21 20487763 61463289 143414341 430243023