12066431 has 6 divisors (see below), whose sum is σ = 13066200. Its totient is φ = 11138088.

The previous prime is 12066427. The next prime is 12066433. The reversal of 12066431 is 13466021.

It is a happy number.

It is not a de Polignac number, because 12066431 - 2² = 12066427 is a prime.

It is a super-2 number, since 2×12066431² = 291197514155522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12066397 and 12066406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12066433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35531 + ... + 35868.

It is an arithmetic number, because the mean of its divisors is an integer number (2177700).

Almost surely, 2^12066431 is an apocalyptic number.

12066431 is a deficient number, since it is larger than the sum of its proper divisors (999769).

12066431 is an equidigital number, since it uses as much as digits as its factorization.

12066431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71425 (or 71412 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 12066431 is about 3473.6768704069. The cubic root of 12066431 is about 229.3645408244.

The spelling of 12066431 in words is "twelve million, sixty-six thousand, four hundred thirty-one".