503513343 has 6 divisors (see below), whose sum is σ = 727297064. Its totient is φ = 335675556.

The previous prime is 503513321. The next prime is 503513363. The reversal of 503513343 is 343315305.

It is a happy number.

It is not a de Polignac number, because 503513343 - 2¹⁰ = 503512319 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503513363) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27972955 + ... + 27972972.

Almost surely, 2^503513343 is an apocalyptic number.

503513343 is a deficient number, since it is larger than the sum of its proper divisors (223783721).

503513343 is a wasteful number, since it uses less digits than its factorization.

503513343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55945933 (or 55945930 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 27.

The square root of 503513343 is about 22439.1029900930. The cubic root of 503513343 is about 795.5552167584. Note that the first 3 decimals are identical.

Adding to 503513343 its reverse (343315305), we get a palindrome (846828648).

The spelling of 503513343 in words is "five hundred three million, five hundred thirteen thousand, three hundred forty-three".