343203203143403 has 4 divisors (see below), whose sum is σ = 352478965390560. Its totient is φ = 333927440896248.

The previous prime is 343203203143399. The next prime is 343203203143421. The reversal of 343203203143403 is 304341302302343.

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

It is a cyclic number.

It is not a de Polignac number, because 343203203143403 - 2² = 343203203143399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (343203203143303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4637881123523 + ... + 4637881123596.

It is an arithmetic number, because the mean of its divisors is an integer number (88119741347640).

Almost surely, 2^{343203203143403} is an apocalyptic number.

343203203143403 is a deficient number, since it is larger than the sum of its proper divisors (9275762247157).

343203203143403 is an equidigital number, since it uses as much as digits as its factorization.

343203203143403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9275762247156.

The product of its (nonzero) digits is 186624, while the sum is 35.

Adding to 343203203143403 its reverse (304341302302343), we get a palindrome (647544505445746).

The spelling of 343203203143403 in words is "three hundred forty-three trillion, two hundred three billion, two hundred three million, one hundred forty-three thousand, four hundred three".