2431409 has 2 divisors, whose sum is σ = 2431410. Its totient is φ = 2431408.

The previous prime is 2431393. The next prime is 2431417. The reversal of 2431409 is 9041342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2411809 + 19600 = 1553^2 + 140^2 .

It is a cyclic number.

It is not a de Polignac number, because 2431409 - 2⁴ = 2431393 is a prime.

It is not a weakly prime, because it can be changed into another prime (2431439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1215704 + 1215705.

It is an arithmetic number, because the mean of its divisors is an integer number (1215705).

2^2431409 is an apocalyptic number.

It is an amenable number.

2431409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2431409 is an equidigital number, since it uses as much as digits as its factorization.

2431409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2431409 is about 1559.2975982794. The cubic root of 2431409 is about 134.4681221468.

The spelling of 2431409 in words is "two million, four hundred thirty-one thousand, four hundred nine".