2140811 has 2 divisors, whose sum is σ = 2140812. Its totient is φ = 2140810.

The previous prime is 2140807. The next prime is 2140823. The reversal of 2140811 is 1180412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2140811 - 2² = 2140807 is a prime.

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 2140811.

It is not a weakly prime, because it can be changed into another prime (2110811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070405 + 1070406.

It is an arithmetic number, because the mean of its divisors is an integer number (1070406).

2^2140811 is an apocalyptic number.

2140811 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140811 is an equidigital number, since it uses as much as digits as its factorization.

2140811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 2140811 is about 1463.1510516690. The cubic root of 2140811 is about 128.8821510493.

The spelling of 2140811 in words is "two million, one hundred forty thousand, eight hundred eleven".