503130243 has 32 divisors (see below), whose sum is σ = 838840320. Its totient is φ = 260595360.

The previous prime is 503130239. The next prime is 503130247. The reversal of 503130243 is 342031305.

It is an interprime number because it is at equal distance from previous prime (503130239) and next prime (503130247).

It is not a de Polignac number, because 503130243 - 2² = 503130239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (503130247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79896 + ... + 85962.

It is an arithmetic number, because the mean of its divisors is an integer number (26213760).

Almost surely, 2^503130243 is an apocalyptic number.

503130243 is a deficient number, since it is larger than the sum of its proper divisors (335710077).

503130243 is a wasteful number, since it uses less digits than its factorization.

503130243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6447.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 503130243 is about 22430.5649282402. The cubic root of 503130243 is about 795.3533985164.

Adding to 503130243 its reverse (342031305), we get a palindrome (845161548).

The spelling of 503130243 in words is "five hundred three million, one hundred thirty thousand, two hundred forty-three".