343131407 has 2 divisors, whose sum is σ = 343131408. Its totient is φ = 343131406.

The previous prime is 343131391. The next prime is 343131413. The reversal of 343131407 is 704131343.

It is a strong prime.

It is an emirp because it is prime and its reverse (704131343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343131407 - 2⁴ = 343131391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343131907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171565703 + 171565704.

It is an arithmetic number, because the mean of its divisors is an integer number (171565704).

Almost surely, 2^343131407 is an apocalyptic number.

343131407 is a deficient number, since it is larger than the sum of its proper divisors (1).

343131407 is an equidigital number, since it uses as much as digits as its factorization.

343131407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 343131407 is about 18523.8064932670. The cubic root of 343131407 is about 700.0893811037.

The spelling of 343131407 in words is "three hundred forty-three million, one hundred thirty-one thousand, four hundred seven".