2133811 has 2 divisors, whose sum is σ = 2133812. Its totient is φ = 2133810.

The previous prime is 2133799. The next prime is 2133821. The reversal of 2133811 is 1183312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2133811 - 2⁷ = 2133683 is a prime.

It is not a weakly prime, because it can be changed into another prime (2133821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1066905 + 1066906.

It is an arithmetic number, because the mean of its divisors is an integer number (1066906).

2^2133811 is an apocalyptic number.

2133811 is a deficient number, since it is larger than the sum of its proper divisors (1).

2133811 is an equidigital number, since it uses as much as digits as its factorization.

2133811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 19.

The square root of 2133811 is about 1460.7569955335. The cubic root of 2133811 is about 128.7415251907.

The spelling of 2133811 in words is "two million, one hundred thirty-three thousand, eight hundred eleven".