343111821871 has 96 divisors (see below), whose sum is σ = 447373610880. Its totient is φ = 260620416000.

The previous prime is 343111821817. The next prime is 343111821883. The reversal of 343111821871 is 178128111343.

It is not a de Polignac number, because 343111821871 - 2¹⁷ = 343111690799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343111821671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 814992241 + ... + 814992661.

It is an arithmetic number, because the mean of its divisors is an integer number (4660141780).

Almost surely, 2^343111821871 is an apocalyptic number.

343111821871 is a deficient number, since it is larger than the sum of its proper divisors (104261789009).

343111821871 is a wasteful number, since it uses less digits than its factorization.

343111821871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865 (or 858 counting only the distinct ones).

The product of its digits is 32256, while the sum is 40.

The spelling of 343111821871 in words is "three hundred forty-three billion, one hundred eleven million, eight hundred twenty-one thousand, eight hundred seventy-one".