343213133231 has 4 divisors (see below), whose sum is σ = 343221651672. Its totient is φ = 343204614792.

The previous prime is 343213133213. The next prime is 343213133257. The reversal of 343213133231 is 132331312343.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132331312343 = 46153 ⋅2867231.

It is a cyclic number.

It is not a de Polignac number, because 343213133231 - 2⁶ = 343213133167 is a prime.

It is a super-2 number, since 2×343213133231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 343213133194 and 343213133203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343213333231) 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 3 ways as a sum of consecutive naturals, for example, 4198496 + ... + 4279461.

It is an arithmetic number, because the mean of its divisors is an integer number (85805412918).

Almost surely, 2^343213133231 is an apocalyptic number.

343213133231 is a deficient number, since it is larger than the sum of its proper divisors (8518441).

343213133231 is an equidigital number, since it uses as much as digits as its factorization.

343213133231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8518440.

The product of its digits is 11664, while the sum is 29.

Adding to 343213133231 its reverse (132331312343), we get a palindrome (475544445574).

The spelling of 343213133231 in words is "three hundred forty-three billion, two hundred thirteen million, one hundred thirty-three thousand, two hundred thirty-one".