12027531 has 8 divisors (see below), whose sum is σ = 16152640. Its totient is φ = 7960392.

The previous prime is 12027529. The next prime is 12027539. The reversal of 12027531 is 13572021.

12027531 = T₁₄₄ + T₁₄₅ + ... + T₄₂₁.

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

It is not a de Polignac number, because 12027531 - 2¹ = 12027529 is a prime.

It is a super-2 number, since 2×12027531² = 289323003911922, 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 = 12027498 and 12027507.

It is not an unprimeable number, because it can be changed into a prime (12027539) 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 7 ways as a sum of consecutive naturals, for example, 14005 + ... + 14838.

It is an arithmetic number, because the mean of its divisors is an integer number (2019080).

Almost surely, 2^12027531 is an apocalyptic number.

12027531 is a deficient number, since it is larger than the sum of its proper divisors (4125109).

12027531 is a wasteful number, since it uses less digits than its factorization.

12027531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28985.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 12027531 is about 3468.0730961155. The cubic root of 12027531 is about 229.1177988289.

Adding to 12027531 its reverse (13572021), we get a palindrome (25599552).

The spelling of 12027531 in words is "twelve million, twenty-seven thousand, five hundred thirty-one".