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13131046 = 217337951
BaseRepresentation
bin110010000101…
…110100100110
3220201010102001
4302011310212
511330143141
61145235514
7216416635
oct62056446
926633361
1013131046
117459605
124492b9a
132949a66
141a5b51c
151245a31
hexc85d26

13131046 has 8 divisors (see below), whose sum is σ = 19810944. Its totient is φ = 6527400.

The previous prime is 13131037. The next prime is 13131061. The reversal of 13131046 is 64013131.

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

It is a congruent number.

It is an unprimeable number.

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, 18630 + ... + 19321.

It is an arithmetic number, because the mean of its divisors is an integer number (2476368).

Almost surely, 213131046 is an apocalyptic number.

13131046 is a deficient number, since it is larger than the sum of its proper divisors (6679898).

13131046 is a wasteful number, since it uses less digits than its factorization.

13131046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38126.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 13131046 is about 3623.6785177496. The cubic root of 13131046 is about 235.9209133640.

Adding to 13131046 its reverse (64013131), we get a palindrome (77144177).

The spelling of 13131046 in words is "thirteen million, one hundred thirty-one thousand, forty-six".

Divisors: 1 2 173 346 37951 75902 6565523 13131046