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316131244 = 221113552677
BaseRepresentation
bin10010110101111…
…100011110101100
3211000212010112121
4102311330132230
51121412144434
651211442324
710556033302
oct2265743654
9730763477
10316131244
111524a20a0
1289a563a4
1350658310
142ddb2272
151cb487b4
hex12d7c7ac

316131244 has 24 divisors (see below), whose sum is σ = 649949328. Its totient is φ = 132642240.

The previous prime is 316131239. The next prime is 316131271. The reversal of 316131244 is 442131613.

It is an unprimeable number.

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, 275767 + ... + 276910.

It is an arithmetic number, because the mean of its divisors is an integer number (27081222).

Almost surely, 2316131244 is an apocalyptic number.

It is an amenable number.

316131244 is an abundant number, since it is smaller than the sum of its proper divisors (333818084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

316131244 is a wasteful number, since it uses less digits than its factorization.

316131244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552705 (or 552703 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 316131244 is about 17780.0799773229. The cubic root of 316131244 is about 681.2227452104. Note that the first 3 decimals are identical.

Adding to 316131244 its reverse (442131613), we get a palindrome (758262857).

The spelling of 316131244 in words is "three hundred sixteen million, one hundred thirty-one thousand, two hundred forty-four".

Divisors: 1 2 4 11 13 22 26 44 52 143 286 572 552677 1105354 2210708 6079447 7184801 12158894 14369602 24317788 28739204 79032811 158065622 316131244