3140861 has 2 divisors, whose sum is σ = 3140862. Its totient is φ = 3140860.

The previous prime is 3140843. The next prime is 3140873. The reversal of 3140861 is 1680413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2102500 + 1038361 = 1450^2 + 1019^2 .

It is a cyclic number.

It is not a de Polignac number, because 3140861 - 2¹⁰ = 3139837 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3140821) 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, 1570430 + 1570431.

It is an arithmetic number, because the mean of its divisors is an integer number (1570431).

Almost surely, 2^3140861 is an apocalyptic number.

It is an amenable number.

3140861 is a deficient number, since it is larger than the sum of its proper divisors (1).

3140861 is an equidigital number, since it uses as much as digits as its factorization.

3140861 is an odious number, because the sum of its binary digits is odd.

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

The square root of 3140861 is about 1772.2474432200. The cubic root of 3140861 is about 146.4478181211.

The spelling of 3140861 in words is "three million, one hundred forty thousand, eight hundred sixty-one".