343503423 has 10 divisors (see below), whose sum is σ = 513134864. Its totient is φ = 229002228.

The previous prime is 343503403. The next prime is 343503427. The reversal of 343503423 is 324305343.

It is a happy number.

It is not a de Polignac number, because 343503423 - 2²² = 339309119 is a prime.

It is a super-2 number, since 2×343503423² = 235989203225433858, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343503427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2120311 + ... + 2120472.

Almost surely, 2^343503423 is an apocalyptic number.

343503423 is a deficient number, since it is larger than the sum of its proper divisors (169631441).

343503423 is an equidigital number, since it uses as much as digits as its factorization.

343503423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4240795 (or 4240786 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 27.

The square root of 343503423 is about 18533.8453376519. The cubic root of 343503423 is about 700.3422972166.

Adding to 343503423 its reverse (324305343), we get a palindrome (667808766).

It can be divided in two parts, 34350 and 3423, that added together give a palindrome (37773).

The spelling of 343503423 in words is "three hundred forty-three million, five hundred three thousand, four hundred twenty-three".