12049831 has 2 divisors, whose sum is σ = 12049832. Its totient is φ = 12049830.

The previous prime is 12049823. The next prime is 12049853. The reversal of 12049831 is 13894021.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (13894021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12049831 - 2³ = 12049823 is a prime.

It is a super-2 number, since 2×12049831² = 290396854257122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12049831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12049031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6024915 + 6024916.

It is an arithmetic number, because the mean of its divisors is an integer number (6024916).

Almost surely, 2^12049831 is an apocalyptic number.

12049831 is a deficient number, since it is larger than the sum of its proper divisors (1).

12049831 is an equidigital number, since it uses as much as digits as its factorization.

12049831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 12049831 is about 3471.2866490683. The cubic root of 12049831 is about 229.2593122857.

It can be divided in two parts, 12049 and 831, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 12049831 in words is "twelve million, forty-nine thousand, eight hundred thirty-one".