12030531 has 4 divisors (see below), whose sum is σ = 16040712. Its totient is φ = 8020352.

The previous prime is 12030521. The next prime is 12030533. The reversal of 12030531 is 13503021.

It is a happy number.

12030531 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 12030531 - 2²³ = 3641923 is a prime.

It is a super-2 number, since 2×12030531² = 289467352283922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12030531.

It is not an unprimeable number, because it can be changed into a prime (12030533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2005086 + ... + 2005091.

It is an arithmetic number, because the mean of its divisors is an integer number (4010178).

Almost surely, 2^12030531 is an apocalyptic number.

12030531 is a deficient number, since it is larger than the sum of its proper divisors (4010181).

12030531 is an equidigital number, since it uses as much as digits as its factorization.

12030531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010180.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 12030531 is about 3468.5055859837. The cubic root of 12030531 is about 229.1368466911.

Adding to 12030531 its reverse (13503021), we get a palindrome (25533552).

It can be divided in two parts, 12030 and 531, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 12030531 in words is "twelve million, thirty thousand, five hundred thirty-one".