343288387 has 4 divisors (see below), whose sum is σ = 369695200. Its totient is φ = 316881576.

The previous prime is 343288381. The next prime is 343288403. The reversal of 343288387 is 783882343.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343288387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (343288381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13203387 + ... + 13203412.

It is an arithmetic number, because the mean of its divisors is an integer number (92423800).

Almost surely, 2^343288387 is an apocalyptic number.

343288387 is a deficient number, since it is larger than the sum of its proper divisors (26406813).

343288387 is a wasteful number, since it uses less digits than its factorization.

343288387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26406812.

The product of its digits is 774144, while the sum is 46.

The square root of 343288387 is about 18528.0432588010. The cubic root of 343288387 is about 700.1961266766.

It can be divided in two parts, 3432 and 88387, that added together give a palindrome (91819).

The spelling of 343288387 in words is "three hundred forty-three million, two hundred eighty-eight thousand, three hundred eighty-seven".