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303040231 = 1329379559
BaseRepresentation
bin10010000100000…
…000011011100111
3210010020001001021
4102010000123213
51110034241411
650023112011
710336541134
oct2204003347
9703201037
10303040231
1114607067a
12855a2607
134aa23860
142c36558b
151b90ea71
hex121006e7

303040231 has 8 divisors (see below), whose sum is σ = 327468960. Its totient is φ = 278771232.

The previous prime is 303040229. The next prime is 303040247. The reversal of 303040231 is 132040303.

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 303040231 - 21 = 303040229 is a prime.

It is a super-2 number, since 2×3030402312 = 183666763209066722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303040211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35971 + ... + 43588.

It is an arithmetic number, because the mean of its divisors is an integer number (40933620).

Almost surely, 2303040231 is an apocalyptic number.

303040231 is a deficient number, since it is larger than the sum of its proper divisors (24428729).

303040231 is a wasteful number, since it uses less digits than its factorization.

303040231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79865.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 303040231 is about 17408.0507524536. The cubic root of 303040231 is about 671.6867213877.

Adding to 303040231 its reverse (132040303), we get a palindrome (435080534).

The spelling of 303040231 in words is "three hundred three million, forty thousand, two hundred thirty-one".

Divisors: 1 13 293 3809 79559 1034267 23310787 303040231