12006531 has 12 divisors (see below), whose sum is σ = 17552808. Its totient is φ = 7907424.

The previous prime is 12006523. The next prime is 12006541. The reversal of 12006531 is 13560021.

12006531 is a `hidden beast` number, since 12 + 0 + 0 + 653 + 1 = 666.

12006531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12006531 - 2³ = 12006523 is a prime.

It is a super-2 number, since 2×12006531² = 288313573307922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12006521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7290 + ... + 8783.

It is an arithmetic number, because the mean of its divisors is an integer number (1462734).

Almost surely, 2^12006531 is an apocalyptic number.

12006531 is a deficient number, since it is larger than the sum of its proper divisors (5546277).

12006531 is a wasteful number, since it uses less digits than its factorization.

12006531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16162 (or 16159 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 12006531 is about 3465.0441555628. The cubic root of 12006531 is about 228.9843750264.

Adding to 12006531 its reverse (13560021), we get a palindrome (25566552).

The spelling of 12006531 in words is "twelve million, six thousand, five hundred thirty-one".