503136634 has 128 divisors (see below), whose sum is σ = 1070383104. Its totient is φ = 172497600.

The previous prime is 503136629. The next prime is 503136637. The reversal of 503136634 is 436631305.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 503136596 and 503136605.

It is not an unprimeable number, because it can be changed into a prime (503136637) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7509469 + ... + 7509535.

It is an arithmetic number, because the mean of its divisors is an integer number (8362368).

Almost surely, 2^503136634 is an apocalyptic number.

503136634 is an abundant number, since it is smaller than the sum of its proper divisors (567246470).

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

503136634 is a wasteful number, since it uses less digits than its factorization.

503136634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 31.

The square root of 503136634 is about 22430.7073896478. The cubic root of 503136634 is about 795.3567661547.

Adding to 503136634 its reverse (436631305), we get a palindrome (939767939).

The spelling of 503136634 in words is "five hundred three million, one hundred thirty-six thousand, six hundred thirty-four".