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12236031 = 321399781
BaseRepresentation
bin101110101011…
…010011111111
3212000122200100
4232223103333
511113023111
61114132143
7206001363
oct56532377
925018610
1012236031
1169a8125
124121053
1326c5572
1418a72a3
15111a756
hexbab4ff

12236031 has 12 divisors (see below), whose sum is σ = 17803240. Its totient is φ = 8097840.

The previous prime is 12235997. The next prime is 12236047. The reversal of 12236031 is 13063221.

It is not a de Polignac number, because 12236031 - 26 = 12235967 is a prime.

It is a super-2 number, since 2×122360312 = 299440909265922, 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 = 12235995 and 12236013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12236131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3640 + ... + 6141.

Almost surely, 212236031 is an apocalyptic number.

12236031 is a deficient number, since it is larger than the sum of its proper divisors (5567209).

12236031 is a wasteful number, since it uses less digits than its factorization.

12236031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9926 (or 9923 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 12236031 is about 3498.0038593461. The cubic root of 12236031 is about 230.4341578950.

Adding to 12236031 its reverse (13063221), we get a palindrome (25299252).

The spelling of 12236031 in words is "twelve million, two hundred thirty-six thousand, thirty-one".

Divisors: 1 3 9 139 417 1251 9781 29343 88029 1359559 4078677 12236031