343457491 has 4 divisors (see below), whose sum is σ = 369877312. Its totient is φ = 317037672.

The previous prime is 343457479. The next prime is 343457501. The reversal of 343457491 is 194754343.

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 343457491 - 2¹¹ = 343455443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (343457431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13209891 + ... + 13209916.

It is an arithmetic number, because the mean of its divisors is an integer number (92469328).

Almost surely, 2^343457491 is an apocalyptic number.

343457491 is a deficient number, since it is larger than the sum of its proper divisors (26419821).

343457491 is a wasteful number, since it uses less digits than its factorization.

343457491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26419820.

The product of its digits is 181440, while the sum is 40.

The square root of 343457491 is about 18532.6061577966. The cubic root of 343457491 is about 700.3110801028.

The spelling of 343457491 in words is "three hundred forty-three million, four hundred fifty-seven thousand, four hundred ninety-one".