531320624 has 10 divisors (see below), whose sum is σ = 1029433740. Its totient is φ = 265660304.

The previous prime is 531320611. The next prime is 531320627. The reversal of 531320624 is 426023135.

It is a junction number, because it is equal to n+sod(n) for n = 531320593 and 531320602.

It is not an unprimeable number, because it can be changed into a prime (531320627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16603754 + ... + 16603785.

It is an arithmetic number, because the mean of its divisors is an integer number (102943374).

Almost surely, 2^531320624 is an apocalyptic number.

It is an amenable number.

531320624 is a deficient number, since it is larger than the sum of its proper divisors (498113116).

531320624 is a wasteful number, since it uses less digits than its factorization.

531320624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33207547 (or 33207541 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 531320624 is about 23050.3931419835. The cubic root of 531320624 is about 809.9388380380.

Adding to 531320624 its reverse (426023135), we get a palindrome (957343759).

The spelling of 531320624 in words is "five hundred thirty-one million, three hundred twenty thousand, six hundred twenty-four".