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13131348 = 2236117939
BaseRepresentation
bin110010000101…
…111001010100
3220201010211020
4302011321110
511330200343
61145241140
7216420546
oct62057124
926633736
1013131348
11745985a
1244931b0
132949c39
141a5b696
151245b83
hexc85e54

13131348 has 24 divisors (see below), whose sum is σ = 31143840. Its totient is φ = 4305120.

The previous prime is 13131343. The next prime is 13131359. The reversal of 13131348 is 84313131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131341) 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, 8238 + ... + 9701.

It is an arithmetic number, because the mean of its divisors is an integer number (1297660).

Almost surely, 213131348 is an apocalyptic number.

It is an amenable number.

13131348 is an abundant number, since it is smaller than the sum of its proper divisors (18012492).

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

13131348 is a wasteful number, since it uses less digits than its factorization.

13131348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18007 (or 18005 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

The square root of 13131348 is about 3623.7201878732. The cubic root of 13131348 is about 235.9227219930.

Adding to 13131348 its reverse (84313131), we get a palindrome (97444479).

The spelling of 13131348 in words is "thirteen million, one hundred thirty-one thousand, three hundred forty-eight".

Divisors: 1 2 3 4 6 12 61 122 183 244 366 732 17939 35878 53817 71756 107634 215268 1094279 2188558 3282837 4377116 6565674 13131348