503213312 has 36 divisors (see below), whose sum is σ = 1147959456. Its totient is φ = 215662080.

The previous prime is 503213287. The next prime is 503213327. The reversal of 503213312 is 213312305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138614 + ... + 142197.

Almost surely, 2^503213312 is an apocalyptic number.

It is an amenable number.

503213312 is an abundant number, since it is smaller than the sum of its proper divisors (644746144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

503213312 is an equidigital number, since it uses as much as digits as its factorization.

503213312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280834 (or 280820 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 503213312 is about 22432.4165439214. The cubic root of 503213312 is about 795.3971682140.

Adding to 503213312 its reverse (213312305), we get a palindrome (716525617).

The spelling of 503213312 in words is "five hundred three million, two hundred thirteen thousand, three hundred twelve".