12005031 has 8 divisors (see below), whose sum is σ = 16024320. Its totient is φ = 7994552.

The previous prime is 12005023. The next prime is 12005047. The reversal of 12005031 is 13050021.

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 12005031 - 2³ = 12005023 is a prime.

It is a super-2 number, since 2×12005031² = 288241538621922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12004998 and 12005016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12005051) 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, 2290 + ... + 5408.

It is an arithmetic number, because the mean of its divisors is an integer number (2003040).

Almost surely, 2^12005031 is an apocalyptic number.

12005031 is a deficient number, since it is larger than the sum of its proper divisors (4019289).

12005031 is a wasteful number, since it uses less digits than its factorization.

12005031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4405.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 12005031 is about 3464.8277013439. The cubic root of 12005031 is about 228.9748388035.

Adding to 12005031 its reverse (13050021), we get a palindrome (25055052).

The spelling of 12005031 in words is "twelve million, five thousand, thirty-one".