349831171 has 2 divisors, whose sum is σ = 349831172. Its totient is φ = 349831170.

The previous prime is 349831133. The next prime is 349831193. The reversal of 349831171 is 171138943.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 349831171 - 2²¹ = 347734019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 349831171.

It is not a weakly prime, because it can be changed into another prime (349838171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174915585 + 174915586.

It is an arithmetic number, because the mean of its divisors is an integer number (174915586).

Almost surely, 2^349831171 is an apocalyptic number.

349831171 is a deficient number, since it is larger than the sum of its proper divisors (1).

349831171 is an equidigital number, since it uses as much as digits as its factorization.

349831171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The square root of 349831171 is about 18703.7742447881. The cubic root of 349831171 is about 704.6165418013.

The spelling of 349831171 in words is "three hundred forty-nine million, eight hundred thirty-one thousand, one hundred seventy-one".