11431709 has 2 divisors, whose sum is σ = 11431710. Its totient is φ = 11431708.

The previous prime is 11431657. The next prime is 11431733. The reversal of 11431709 is 90713411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6604900 + 4826809 = 2570^2 + 2197^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11431709 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 (11431789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5715854 + 5715855.

It is an arithmetic number, because the mean of its divisors is an integer number (5715855).

Almost surely, 2^11431709 is an apocalyptic number.

It is an amenable number.

11431709 is a deficient number, since it is larger than the sum of its proper divisors (1).

11431709 is an equidigital number, since it uses as much as digits as its factorization.

11431709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 11431709 is about 3381.0810401409. The cubic root of 11431709 is about 225.2701873545.

The spelling of 11431709 in words is "eleven million, four hundred thirty-one thousand, seven hundred nine".