12005131 has 8 divisors (see below), whose sum is σ = 12979280. Its totient is φ = 11065248.

The previous prime is 12005099. The next prime is 12005141. The reversal of 12005131 is 13150021.

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

It is a cyclic number.

It is not a de Polignac number, because 12005131 - 2⁵ = 12005099 is a prime.

It is a super-2 number, since 2×12005131² = 288246340654322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12005141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7836 + ... + 9241.

It is an arithmetic number, because the mean of its divisors is an integer number (1622410).

Almost surely, 2^12005131 is an apocalyptic number.

12005131 is a deficient number, since it is larger than the sum of its proper divisors (974149).

12005131 is a wasteful number, since it uses less digits than its factorization.

12005131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17133.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 12005131 is about 3464.8421320458. The cubic root of 12005131 is about 228.9754745764.

Adding to 12005131 its reverse (13150021), we get a palindrome (25155152).

The spelling of 12005131 in words is "twelve million, five thousand, one hundred thirty-one".