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318979007 = 17139134989
BaseRepresentation
bin10011000000110…
…011101110111111
3211020012210221022
4103000303232333
51123124312012
651352454355
710622163644
oct2300635677
9736183838
10318979007
11154067716
128a9aa3bb
1351114599
1430513dcb
151d00c472
hex13033bbf

318979007 has 8 divisors (see below), whose sum is σ = 340174800. Its totient is φ = 298053504.

The previous prime is 318978991. The next prime is 318979009. The reversal of 318979007 is 700979813.

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 318979007 - 24 = 318978991 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 (318979009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65132 + ... + 69857.

It is an arithmetic number, because the mean of its divisors is an integer number (42521850).

Almost surely, 2318979007 is an apocalyptic number.

318979007 is a deficient number, since it is larger than the sum of its proper divisors (21195793).

318979007 is a wasteful number, since it uses less digits than its factorization.

318979007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135145.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 318979007 is about 17859.9833986485. The cubic root of 318979007 is about 683.2621563513.

It can be divided in two parts, 31897 and 9007, that added together give a palindrome (40904).

The spelling of 318979007 in words is "three hundred eighteen million, nine hundred seventy-nine thousand, seven".

Divisors: 1 17 139 2363 134989 2294813 18763471 318979007