349223071 has 4 divisors (see below), whose sum is σ = 351567000. Its totient is φ = 346879144.

The previous prime is 349223051. The next prime is 349223089. The reversal of 349223071 is 170322943.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 349223071 - 2¹¹ = 349221023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349223051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1171741 + ... + 1172038.

It is an arithmetic number, because the mean of its divisors is an integer number (87891750).

Almost surely, 2^349223071 is an apocalyptic number.

349223071 is a deficient number, since it is larger than the sum of its proper divisors (2343929).

349223071 is a wasteful number, since it uses less digits than its factorization.

349223071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2343928.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 349223071 is about 18687.5110969867. The cubic root of 349223071 is about 704.2080344374.

The spelling of 349223071 in words is "three hundred forty-nine million, two hundred twenty-three thousand, seventy-one".