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80312 = 2310039
BaseRepresentation
bin10011100110111000
311002011112
4103212320
510032222
61415452
7453101
oct234670
9132145
1080312
1155381
123a588
132a72b
14213a8
1518be2
hex139b8

80312 has 8 divisors (see below), whose sum is σ = 150600. Its totient is φ = 40152.

The previous prime is 80309. The next prime is 80317. The reversal of 80312 is 21308.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5012 + ... + 5027.

It is an arithmetic number, because the mean of its divisors is an integer number (18825).

280312 is an apocalyptic number.

It is an amenable number.

80312 is a deficient number, since it is larger than the sum of its proper divisors (70288).

80312 is a wasteful number, since it uses less digits than its factorization.

80312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10045 (or 10041 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 80312 is about 283.3937190553. The cubic root of 80312 is about 43.1446364401.

The spelling of 80312 in words is "eighty thousand, three hundred twelve".

Divisors: 1 2 4 8 10039 20078 40156 80312