12085431 has 16 divisors (see below), whose sum is σ = 16990560. Its totient is φ = 7629440.

The previous prime is 12085429. The next prime is 12085457. The reversal of 12085431 is 13458021.

It is a cyclic number.

It is not a de Polignac number, because 12085431 - 2¹ = 12085429 is a prime.

It is a super-2 number, since 2×12085431² = 292115284911522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12085471) 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 15 ways as a sum of consecutive naturals, for example, 3301 + ... + 5921.

It is an arithmetic number, because the mean of its divisors is an integer number (1061910).

Almost surely, 2^12085431 is an apocalyptic number.

12085431 is a deficient number, since it is larger than the sum of its proper divisors (4905129).

12085431 is a wasteful number, since it uses less digits than its factorization.

12085431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2706.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 12085431 is about 3476.4106489309. The cubic root of 12085431 is about 229.4848647468.

The spelling of 12085431 in words is "twelve million, eighty-five thousand, four hundred thirty-one".