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81314 = 2109373
BaseRepresentation
bin10011110110100010
311010112122
4103312202
510100224
61424242
7456032
oct236642
9133478
1081314
1156102
123b082
132b01c
14218c2
151915e
hex13da2

81314 has 8 divisors (see below), whose sum is σ = 123420. Its totient is φ = 40176.

The previous prime is 81307. The next prime is 81331. The reversal of 81314 is 41318.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 80089 + 1225 = 283^2 + 35^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×813142 = 13223933192, which contains 22 as substring.

It is a Curzon number.

It is a plaindrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 81292 and 81301.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 81314.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32 + ... + 404.

281314 is an apocalyptic number.

81314 is a deficient number, since it is larger than the sum of its proper divisors (42106).

81314 is a wasteful number, since it uses less digits than its factorization.

81314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484.

The product of its digits is 96, while the sum is 17.

The square root of 81314 is about 285.1560976027. The cubic root of 81314 is about 43.3233244471.

Subtracting from 81314 its product of digits (96), we obtain a palindrome (81218).

The spelling of 81314 in words is "eighty-one thousand, three hundred fourteen".

Divisors: 1 2 109 218 373 746 40657 81314