Search a number
-
+
31484712 = 2337187409
BaseRepresentation
bin111100000011…
…0101100101000
32012020120220110
41320012230220
531030002322
63042454320
7531421110
oct170065450
965216813
1031484712
1116854a26
12a6643a0
1366a4a0c
144278040
152b6dc0c
hex1e06b28

31484712 has 32 divisors (see below), whose sum is σ = 89956800. Its totient is φ = 8995584.

The previous prime is 31484711. The next prime is 31484741. The reversal of 31484712 is 21748413.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 31484712.

It is not an unprimeable number, because it can be changed into a prime (31484711) 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 7 ways as a sum of consecutive naturals, for example, 93537 + ... + 93872.

It is an arithmetic number, because the mean of its divisors is an integer number (2811150).

Almost surely, 231484712 is an apocalyptic number.

It is an amenable number.

31484712 is an abundant number, since it is smaller than the sum of its proper divisors (58472088).

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

31484712 is a wasteful number, since it uses less digits than its factorization.

31484712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187425 (or 187421 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 31484712 is about 5611.1239515805. The cubic root of 31484712 is about 315.7668792840.

The spelling of 31484712 in words is "thirty-one million, four hundred eighty-four thousand, seven hundred twelve".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 42 56 84 168 187409 374818 562227 749636 1124454 1311863 1499272 2248908 2623726 3935589 4497816 5247452 7871178 10494904 15742356 31484712