12031005 has 32 divisors (see below), whose sum is σ = 22176000. Its totient is φ = 5455872.

The previous prime is 12031003. The next prime is 12031039. The reversal of 12031005 is 50013021.

It is not a de Polignac number, because 12031005 - 2¹ = 12031003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031003) 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 31 ways as a sum of consecutive naturals, for example, 15261 + ... + 16029.

It is an arithmetic number, because the mean of its divisors is an integer number (693000).

Almost surely, 2^12031005 is an apocalyptic number.

12031005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12031005 is a deficient number, since it is larger than the sum of its proper divisors (10144995).

12031005 is a wasteful number, since it uses less digits than its factorization.

12031005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933.

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

The square root of 12031005 is about 3468.5739144496. The cubic root of 12031005 is about 229.1398559636.

Adding to 12031005 its reverse (50013021), we get a palindrome (62044026).

It can be divided in two parts, 120 and 31005, that added together give a triangular number (31125 = T₂₄₉).

The spelling of 12031005 in words is "twelve million, thirty-one thousand, five".