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12027031 = 19136287
BaseRepresentation
bin101101111000…
…010010010111
3211122000222121
4231320102113
511034331111
61105440411
7204141142
oct55702227
924560877
1012027031
1168750a5
124040107
1326513b3
141851059
1510c8871
hexb78497

12027031 has 4 divisors (see below), whose sum is σ = 12035232. Its totient is φ = 12018832.

The previous prime is 12027017. The next prime is 12027049. The reversal of 12027031 is 13072021.

It is a happy number.

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 12027031 - 211 = 12024983 is a prime.

It is a super-2 number, since 2×120270312 = 289298949349922, 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 = 12026996 and 12027014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12027011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1231 + ... + 5056.

It is an arithmetic number, because the mean of its divisors is an integer number (3008808).

Almost surely, 212027031 is an apocalyptic number.

12027031 is a deficient number, since it is larger than the sum of its proper divisors (8201).

12027031 is an equidigital number, since it uses as much as digits as its factorization.

12027031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8200.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 12027031 is about 3468.0010092271. The cubic root of 12027031 is about 229.1146238773.

Adding to 12027031 its reverse (13072021), we get a palindrome (25099052).

The spelling of 12027031 in words is "twelve million, twenty-seven thousand, thirty-one".

Divisors: 1 1913 6287 12027031