503242343 has 4 divisors (see below), whose sum is σ = 504363600. Its totient is φ = 502121088.

The previous prime is 503242283. The next prime is 503242387. The reversal of 503242343 is 343242305.

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 503242343 - 2¹⁸ = 502980199 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 (503842343) 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, 559955 + ... + 560852.

It is an arithmetic number, because the mean of its divisors is an integer number (126090900).

Almost surely, 2^503242343 is an apocalyptic number.

503242343 is a deficient number, since it is larger than the sum of its proper divisors (1121257).

503242343 is a wasteful number, since it uses less digits than its factorization.

503242343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121256.

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

The square root of 503242343 is about 22433.0636115534. The cubic root of 503242343 is about 795.4124637362.

Adding to 503242343 its reverse (343242305), we get a palindrome (846484648).

The spelling of 503242343 in words is "five hundred three million, two hundred forty-two thousand, three hundred forty-three".