343008991 has 12 divisors (see below), whose sum is σ = 372116592. Its totient is φ = 316033536.

The previous prime is 343008989. The next prime is 343008997. The reversal of 343008991 is 199800343.

It is not a de Polignac number, because 343008991 - 2¹ = 343008989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 343008991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343008997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107775 + ... + 110911.

It is an arithmetic number, because the mean of its divisors is an integer number (31009716).

Almost surely, 2^343008991 is an apocalyptic number.

343008991 is a deficient number, since it is larger than the sum of its proper divisors (29107601).

343008991 is a wasteful number, since it uses less digits than its factorization.

343008991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3810 (or 3797 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 343008991 is about 18520.5019100455. The cubic root of 343008991 is about 700.0061162731.

The spelling of 343008991 in words is "three hundred forty-three million, eight thousand, nine hundred ninety-one".