343400949191 has 4 divisors (see below), whose sum is σ = 343961147112. Its totient is φ = 342840751272.

The previous prime is 343400949179. The next prime is 343400949197. The reversal of 343400949191 is 191949004343.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 191949004343 = 47 ⋅4084021369.

It is a cyclic number.

It is not a de Polignac number, because 343400949191 - 2³⁴ = 326221080007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343400949197) 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, 280098041 + ... + 280099266.

It is an arithmetic number, because the mean of its divisors is an integer number (85990286778).

Almost surely, 2^343400949191 is an apocalyptic number.

343400949191 is a deficient number, since it is larger than the sum of its proper divisors (560197921).

343400949191 is an equidigital number, since it uses as much as digits as its factorization.

343400949191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560197920.

The product of its (nonzero) digits is 419904, while the sum is 47.

The spelling of 343400949191 in words is "three hundred forty-three billion, four hundred million, nine hundred forty-nine thousand, one hundred ninety-one".