343128821343 has 72 divisors (see below), whose sum is σ = 585551102976. Its totient is φ = 178074721440.

The previous prime is 343128821341. The next prime is 343128821381.

343128821343 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 343128821343 - 2¹ = 343128821341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 343128821295 and 343128821304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343128821341) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 19325596 + ... + 19343342.

It is an arithmetic number, because the mean of its divisors is an integer number (8132654208).

Almost surely, 2^343128821343 is an apocalyptic number.

343128821343 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

343128821343 is a deficient number, since it is larger than the sum of its proper divisors (242422281633).

343128821343 is a wasteful number, since it uses less digits than its factorization.

343128821343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18873 (or 18855 counting only the distinct ones).

The product of its digits is 331776, while the sum is 42.

The spelling of 343128821343 in words is "three hundred forty-three billion, one hundred twenty-eight million, eight hundred twenty-one thousand, three hundred forty-three".