343239891 has 8 divisors (see below), whose sum is σ = 457923024. Its totient is φ = 228691680.

The previous prime is 343239881. The next prime is 343239899. The reversal of 343239891 is 198932343.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 343239891 - 2⁵ = 343239859 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (343239899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27636 + ... + 38081.

It is an arithmetic number, because the mean of its divisors is an integer number (57240378).

Almost surely, 2^343239891 is an apocalyptic number.

343239891 is a deficient number, since it is larger than the sum of its proper divisors (114683133).

343239891 is a wasteful number, since it uses less digits than its factorization.

343239891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67461.

The product of its digits is 139968, while the sum is 42.

The square root of 343239891 is about 18526.7344936986. The cubic root of 343239891 is about 700.1631531264.

The spelling of 343239891 in words is "three hundred forty-three million, two hundred thirty-nine thousand, eight hundred ninety-one".