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10863131 = 12298839
BaseRepresentation
bin101001011100…
…001000011011
3202102220102012
4221130020123
510240110011
61024500135
7161222636
oct51341033
922386365
1010863131
11614a6a4
12377a64b
1323346b6
14162ac1d
15e48a8b
hexa5c21b

10863131 has 4 divisors (see below), whose sum is σ = 10873200. Its totient is φ = 10853064.

The previous prime is 10863121. The next prime is 10863169. The reversal of 10863131 is 13136801.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 10863131 - 26 = 10863067 is a prime.

It is a super-2 number, since 2×108631312 = 236015230246322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10863097 and 10863106.

It is not an unprimeable number, because it can be changed into a prime (10863121) 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, 3191 + ... + 5648.

It is an arithmetic number, because the mean of its divisors is an integer number (2718300).

Almost surely, 210863131 is an apocalyptic number.

10863131 is a deficient number, since it is larger than the sum of its proper divisors (10069).

10863131 is an equidigital number, since it uses as much as digits as its factorization.

10863131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10068.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 10863131 is about 3295.9264251497. The cubic root of 10863131 is about 221.4717508182.

Adding to 10863131 its reverse (13136801), we get a palindrome (23999932).

The spelling of 10863131 in words is "ten million, eight hundred sixty-three thousand, one hundred thirty-one".

Divisors: 1 1229 8839 10863131