12085731 has 12 divisors (see below), whose sum is σ = 19951152. Its totient is φ = 6906096.

The previous prime is 12085727. The next prime is 12085763. The reversal of 12085731 is 13758021.

It is not a de Polignac number, because 12085731 - 2² = 12085727 is a prime.

It is a super-2 number, since 2×12085731² = 292129787608722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12085695 and 12085704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12085781) 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 11 ways as a sum of consecutive naturals, for example, 95856 + ... + 95981.

It is an arithmetic number, because the mean of its divisors is an integer number (1662596).

Almost surely, 2^12085731 is an apocalyptic number.

12085731 is a deficient number, since it is larger than the sum of its proper divisors (7865421).

12085731 is a wasteful number, since it uses less digits than its factorization.

12085731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191850 (or 191847 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 12085731 is about 3476.4537966152. The cubic root of 12085731 is about 229.4867635865.

The spelling of 12085731 in words is "twelve million, eighty-five thousand, seven hundred thirty-one".