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302423143 = 11113243301
BaseRepresentation
bin10010000001101…
…001110001100111
3210002001200120011
4102001221301213
51104410020033
650001551051
710331361061
oct2201516147
9702050504
10302423143
11145789a90
1285345487
134a868a09
142c244731
151b83bccd
hex12069c67

302423143 has 8 divisors (see below), whose sum is σ = 332837136. Its totient is φ = 272496000.

The previous prime is 302423119. The next prime is 302423179. The reversal of 302423143 is 341324203.

It is a happy number.

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 302423143 - 225 = 268868711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (302423243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120408 + ... + 122893.

It is an arithmetic number, because the mean of its divisors is an integer number (41604642).

Almost surely, 2302423143 is an apocalyptic number.

302423143 is a deficient number, since it is larger than the sum of its proper divisors (30413993).

302423143 is a wasteful number, since it uses less digits than its factorization.

302423143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243425.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 302423143 is about 17390.3175071647. The cubic root of 302423143 is about 671.2304877077.

Adding to 302423143 its reverse (341324203), we get a palindrome (643747346).

The spelling of 302423143 in words is "three hundred two million, four hundred twenty-three thousand, one hundred forty-three".

Divisors: 1 11 113 1243 243301 2676311 27493013 302423143