12030311 has 16 divisors (see below), whose sum is σ = 13063680. Its totient is φ = 11051040.

The previous prime is 12030301. The next prime is 12030323. The reversal of 12030311 is 11303021.

It is not a de Polignac number, because 12030311 - 2¹⁸ = 11768167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12030292 and 12030301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12030301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86480 + ... + 86618.

It is an arithmetic number, because the mean of its divisors is an integer number (816480).

Almost surely, 2^12030311 is an apocalyptic number.

12030311 is a deficient number, since it is larger than the sum of its proper divisors (1033369).

12030311 is a wasteful number, since it uses less digits than its factorization.

12030311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 12030311 is about 3468.4738718924. The cubic root of 12030311 is about 229.1354499554.

Adding to 12030311 its reverse (11303021), we get a palindrome (23333332).

The spelling of 12030311 in words is "twelve million, thirty thousand, three hundred eleven".