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31244 = 2273107
BaseRepresentation
bin111101000001100
31120212012
413220030
51444434
6400352
7160043
oct75014
946765
1031244
1121524
12160b8
13112b5
14b55a
1593ce
hex7a0c

31244 has 12 divisors (see below), whose sum is σ = 55944. Its totient is φ = 15264.

The previous prime is 31237. The next prime is 31247. The reversal of 31244 is 44213.

Adding to 31244 its reverse (44213), we get a palindrome (75457).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 31244.

It is not an unprimeable number, because it can be changed into a prime (31247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239 + ... + 345.

It is an arithmetic number, because the mean of its divisors is an integer number (4662).

231244 is an apocalyptic number.

It is an amenable number.

31244 is a deficient number, since it is larger than the sum of its proper divisors (24700).

31244 is a wasteful number, since it uses less digits than its factorization.

31244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 182 counting only the distinct ones).

The product of its digits is 96, while the sum is 14.

The square root of 31244 is about 176.7597239192. The cubic root of 31244 is about 31.4960102447.

The spelling of 31244 in words is "thirty-one thousand, two hundred forty-four".

Divisors: 1 2 4 73 107 146 214 292 428 7811 15622 31244