343491311 has 2 divisors, whose sum is σ = 343491312. Its totient is φ = 343491310.

The previous prime is 343491299. The next prime is 343491319. The reversal of 343491311 is 113194343.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343491311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343491319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171745655 + 171745656.

It is an arithmetic number, because the mean of its divisors is an integer number (171745656).

Almost surely, 2^343491311 is an apocalyptic number.

343491311 is a deficient number, since it is larger than the sum of its proper divisors (1).

343491311 is an equidigital number, since it uses as much as digits as its factorization.

343491311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 29.

The square root of 343491311 is about 18533.5185812085. The cubic root of 343491311 is about 700.3340657163.

The spelling of 343491311 in words is "three hundred forty-three million, four hundred ninety-one thousand, three hundred eleven".