12002031 has 12 divisors (see below), whose sum is σ = 17740008. Its totient is φ = 7815024.

The previous prime is 12001999. The next prime is 12002059. The reversal of 12002031 is 13020021.

It is a happy number.

It is not a de Polignac number, because 12002031 - 2⁵ = 12001999 is a prime.

It is a super-2 number, since 2×12002031² = 288097496249922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002231) 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, 15120 + ... + 15893.

It is an arithmetic number, because the mean of its divisors is an integer number (1478334).

Almost surely, 2^12002031 is an apocalyptic number.

12002031 is a deficient number, since it is larger than the sum of its proper divisors (5737977).

12002031 is a wasteful number, since it uses less digits than its factorization.

12002031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31062 (or 31059 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 12002031 is about 3464.3947523341. The cubic root of 12002031 is about 228.9557639744.

Adding to 12002031 its reverse (13020021), we get a palindrome (25022052).

The spelling of 12002031 in words is "twelve million, two thousand, thirty-one".