2312861 has 2 divisors, whose sum is σ = 2312862. Its totient is φ = 2312860.

The previous prime is 2312809. The next prime is 2312873. The reversal of 2312861 is 1682132.

2312861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2280100 + 32761 = 1510^2 + 181^2 .

It is a cyclic number.

It is not a de Polignac number, because 2312861 - 2¹⁸ = 2050717 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2312801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1156430 + 1156431.

It is an arithmetic number, because the mean of its divisors is an integer number (1156431).

2^2312861 is an apocalyptic number.

It is an amenable number.

2312861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2312861 is an equidigital number, since it uses as much as digits as its factorization.

2312861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 23.

The square root of 2312861 is about 1520.8093240114. The cubic root of 2312861 is about 132.2461926689.

Adding to 2312861 its reverse (1682132), we get a palindrome (3994993).

The spelling of 2312861 in words is "two million, three hundred twelve thousand, eight hundred sixty-one".