531315224 has 32 divisors (see below), whose sum is σ = 1112063040. Its totient is φ = 235888800.

The previous prime is 531315217. The next prime is 531315299. The reversal of 531315224 is 422513135.

It is a happy number.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 531315193 and 531315202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66422 + ... + 73989.

It is an arithmetic number, because the mean of its divisors is an integer number (34751970).

Almost surely, 2^531315224 is an apocalyptic number.

It is an amenable number.

531315224 is an abundant number, since it is smaller than the sum of its proper divisors (580747816).

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

531315224 is a wasteful number, since it uses less digits than its factorization.

531315224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140471 (or 140467 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 531315224 is about 23050.2760070243. The cubic root of 531315224 is about 809.9360941301.

Adding to 531315224 its reverse (422513135), we get a palindrome (953828359).

The spelling of 531315224 in words is "five hundred thirty-one million, three hundred fifteen thousand, two hundred twenty-four".