12012031 has 4 divisors (see below), whose sum is σ = 12131064. Its totient is φ = 11893000.

The previous prime is 12012017. The next prime is 12012037. The reversal of 12012031 is 13021021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12012031 - 2⁷ = 12011903 is a prime.

It is a super-2 number, since 2×12012031² = 288577777489922, 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 = 12011999 and 12012017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59365 + ... + 59566.

It is an arithmetic number, because the mean of its divisors is an integer number (3032766).

Almost surely, 2^12012031 is an apocalyptic number.

12012031 is a deficient number, since it is larger than the sum of its proper divisors (119033).

12012031 is a wasteful number, since it uses less digits than its factorization.

12012031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119032.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 12012031 is about 3465.8377053751. The cubic root of 12012031 is about 229.0193343833.

Adding to 12012031 its reverse (13021021), we get a palindrome (25033052).

The spelling of 12012031 in words is "twelve million, twelve thousand, thirty-one".