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316131992 = 231123915031
BaseRepresentation
bin10010110101111…
…100101010011000
3211000212011120022
4102311330222120
51121412210432
651211450012
710556035421
oct2265745230
9730764508
10316131992
111524a2710
1289a56908
1350658767
142ddb2648
151cb48b12
hex12d7ca98

316131992 has 32 divisors (see below), whose sum is σ = 649382400. Its totient is φ = 143085600.

The previous prime is 316131967. The next prime is 316132027. The reversal of 316131992 is 299131613.

316131992 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13517 + ... + 28547.

It is an arithmetic number, because the mean of its divisors is an integer number (20293200).

Almost surely, 2316131992 is an apocalyptic number.

It is an amenable number.

316131992 is an abundant number, since it is smaller than the sum of its proper divisors (333250408).

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

316131992 is a wasteful number, since it uses less digits than its factorization.

316131992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15287 (or 15283 counting only the distinct ones).

The product of its digits is 8748, while the sum is 35.

The square root of 316131992 is about 17780.1010120865. The cubic root of 316131992 is about 681.2232824917.

It can be divided in two parts, 3161 and 31992, that added together give a palindrome (35153).

The spelling of 316131992 in words is "three hundred sixteen million, one hundred thirty-one thousand, nine hundred ninety-two".

Divisors: 1 2 4 8 11 22 44 88 239 478 956 1912 2629 5258 10516 15031 21032 30062 60124 120248 165341 330682 661364 1322728 3592409 7184818 14369636 28739272 39516499 79032998 158065996 316131992