343131223143 has 32 divisors (see below), whose sum is σ = 473675573952. Its totient is φ = 220793216000.

The previous prime is 343131223139. The next prime is 343131223207. The reversal of 343131223143 is 341322131343.

It is a cyclic number.

It is not a de Polignac number, because 343131223143 - 2² = 343131223139 is a prime.

It is a super-2 number, since 2×343131223143² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 343131223143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343131223133) 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 31 ways as a sum of consecutive naturals, for example, 17046721 + ... + 17066837.

It is an arithmetic number, because the mean of its divisors is an integer number (14802361686).

Almost surely, 2^343131223143 is an apocalyptic number.

343131223143 is a deficient number, since it is larger than the sum of its proper divisors (130544350809).

343131223143 is a wasteful number, since it uses less digits than its factorization.

343131223143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21635.

The product of its digits is 15552, while the sum is 30.

Adding to 343131223143 its reverse (341322131343), we get a palindrome (684453354486).

The spelling of 343131223143 in words is "three hundred forty-three billion, one hundred thirty-one million, two hundred twenty-three thousand, one hundred forty-three".