345400343 has 4 divisors (see below), whose sum is σ = 350555640. Its totient is φ = 340245048.

The previous prime is 345400331. The next prime is 345400351. The reversal of 345400343 is 343004543.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345400343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345400313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2577548 + ... + 2577681.

It is an arithmetic number, because the mean of its divisors is an integer number (87638910).

Almost surely, 2^345400343 is an apocalyptic number.

345400343 is a deficient number, since it is larger than the sum of its proper divisors (5155297).

345400343 is an equidigital number, since it uses as much as digits as its factorization.

345400343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5155296.

The product of its (nonzero) digits is 8640, while the sum is 26.

The square root of 345400343 is about 18584.9493677007. The cubic root of 345400343 is about 701.6290921090.

Adding to 345400343 its reverse (343004543), we get a palindrome (688404886).

The spelling of 345400343 in words is "three hundred forty-five million, four hundred thousand, three hundred forty-three".