343042909 has 4 divisors (see below), whose sum is σ = 374228640. Its totient is φ = 311857180.

The previous prime is 343042879. The next prime is 343042957. The reversal of 343042909 is 909240343.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 343042909 - 2⁷ = 343042781 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 (343042979) 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, 15592849 + ... + 15592870.

It is an arithmetic number, because the mean of its divisors is an integer number (93557160).

Almost surely, 2^343042909 is an apocalyptic number.

It is an amenable number.

343042909 is a deficient number, since it is larger than the sum of its proper divisors (31185731).

343042909 is a wasteful number, since it uses less digits than its factorization.

343042909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31185730.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 343042909 is about 18521.4175753369. The cubic root of 343042909 is about 700.0291885788.

The spelling of 343042909 in words is "three hundred forty-three million, forty-two thousand, nine hundred nine".