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31484 = 2217463
BaseRepresentation
bin111101011111100
31121012002
413223330
52001414
6401432
7160535
oct75374
947162
1031484
1121722
1216278
131143b
14b68c
1594de
hex7afc

31484 has 12 divisors (see below), whose sum is σ = 58464. Its totient is φ = 14784.

The previous prime is 31481. The next prime is 31489. The reversal of 31484 is 48413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164 + ... + 299.

It is an arithmetic number, because the mean of its divisors is an integer number (4872).

231484 is an apocalyptic number.

31484 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31484 is a deficient number, since it is larger than the sum of its proper divisors (26980).

31484 is a wasteful number, since it uses less digits than its factorization.

31484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484 (or 482 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

The square root of 31484 is about 177.4373128742. The cubic root of 31484 is about 31.5764499000.

Adding to 31484 its reverse (48413), we get a palindrome (79897).

It can be divided in two parts, 31 and 484, that added together give a palindrome (515).

The spelling of 31484 in words is "thirty-one thousand, four hundred eighty-four".

Divisors: 1 2 4 17 34 68 463 926 1852 7871 15742 31484