2331409 has 2 divisors, whose sum is σ = 2331410. Its totient is φ = 2331408.

The previous prime is 2331391. The next prime is 2331419. The reversal of 2331409 is 9041332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2131600 + 199809 = 1460^2 + 447^2 .

It is a cyclic number.

It is not a de Polignac number, because 2331409 - 2⁵ = 2331377 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 2331409.

It is not a weakly prime, because it can be changed into another prime (2331419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1165704 + 1165705.

It is an arithmetic number, because the mean of its divisors is an integer number (1165705).

2^2331409 is an apocalyptic number.

It is an amenable number.

2331409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2331409 is an equidigital number, since it uses as much as digits as its factorization.

2331409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 2331409 is about 1526.8952157892. The cubic root of 2331409 is about 132.5987681759.

The spelling of 2331409 in words is "two million, three hundred thirty-one thousand, four hundred nine".