343834987 has 4 divisors (see below), whose sum is σ = 346308760. Its totient is φ = 341361216.

The previous prime is 343834943. The next prime is 343834999. The reversal of 343834987 is 789438343.

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 343834987 - 2¹⁵ = 343802219 is a prime.

It is an alternating number because its digits alternate between odd and even.

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 343834987.

It is not an unprimeable number, because it can be changed into a prime (343834927) 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, 1236678 + ... + 1236955.

It is an arithmetic number, because the mean of its divisors is an integer number (86577190).

Almost surely, 2^343834987 is an apocalyptic number.

343834987 is a deficient number, since it is larger than the sum of its proper divisors (2473773).

343834987 is a wasteful number, since it uses less digits than its factorization.

343834987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2473772.

The product of its digits is 1741824, while the sum is 49.

The square root of 343834987 is about 18542.7880050439. The cubic root of 343834987 is about 700.5675580685.

The spelling of 343834987 in words is "three hundred forty-three million, eight hundred thirty-four thousand, nine hundred eighty-seven".