349113691 has 2 divisors, whose sum is σ = 349113692. Its totient is φ = 349113690.

The previous prime is 349113643. The next prime is 349113701. The reversal of 349113691 is 196311943.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 349113691 - 2⁹ = 349113179 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 349113691.

It is not a weakly prime, because it can be changed into another prime (349113631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174556845 + 174556846.

It is an arithmetic number, because the mean of its divisors is an integer number (174556846).

Almost surely, 2^349113691 is an apocalyptic number.

349113691 is a deficient number, since it is larger than the sum of its proper divisors (1).

349113691 is an equidigital number, since it uses as much as digits as its factorization.

349113691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 37.

The square root of 349113691 is about 18684.5843143486. The cubic root of 349113691 is about 704.1345052003.

The spelling of 349113691 in words is "three hundred forty-nine million, one hundred thirteen thousand, six hundred ninety-one".