203513314343 has 4 divisors (see below), whose sum is σ = 205380409080. Its totient is φ = 201646219608.

The previous prime is 203513314321. The next prime is 203513314373. The reversal of 203513314343 is 343413315302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 343413315302 = 2 ⋅171706657651.

It is a cyclic number.

It is not a de Polignac number, because 203513314343 - 2³⁴ = 186333445159 is a prime.

It is a super-3 number, since 3×203513314343³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203513314373) 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, 933547205 + ... + 933547422.

It is an arithmetic number, because the mean of its divisors is an integer number (51345102270).

Almost surely, 2^203513314343 is an apocalyptic number.

203513314343 is a deficient number, since it is larger than the sum of its proper divisors (1867094737).

203513314343 is a wasteful number, since it uses less digits than its factorization.

203513314343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867094736.

The product of its (nonzero) digits is 38880, while the sum is 32.

Adding to 203513314343 its reverse (343413315302), we get a palindrome (546926629645).

The spelling of 203513314343 in words is "two hundred three billion, five hundred thirteen million, three hundred fourteen thousand, three hundred forty-three".