12031019 has 48 divisors (see below), whose sum is σ = 17581536. Its totient is φ = 8064000.

The previous prime is 12031003. The next prime is 12031039. The reversal of 12031019 is 91013021.

It is a happy number.

It is not a de Polignac number, because 12031019 - 2⁴ = 12031003 is a prime.

It is a super-2 number, since 2×12031019² = 289490836356722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 12030988 and 12031006.

It is not an unprimeable number, because it can be changed into a prime (12031039) 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 47 ways as a sum of consecutive naturals, for example, 119069 + ... + 119169.

It is an arithmetic number, because the mean of its divisors is an integer number (366282).

Almost surely, 2^12031019 is an apocalyptic number.

12031019 is a deficient number, since it is larger than the sum of its proper divisors (5550517).

12031019 is a wasteful number, since it uses less digits than its factorization.

12031019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 12031019 is about 3468.5759325694. The cubic root of 12031019 is about 229.1399448438.

12031019 divided by its sum of digits (17) gives a palindrome (707707).

It can be divided in two parts, 1203 and 1019, that added together give a palindrome (2222).

The spelling of 12031019 in words is "twelve million, thirty-one thousand, nineteen".