531503212 has 6 divisors (see below), whose sum is σ = 930130628. Its totient is φ = 265751604.

The previous prime is 531503209. The next prime is 531503221. The reversal of 531503212 is 212305135.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66437898 + ... + 66437905.

Almost surely, 2^531503212 is an apocalyptic number.

It is an amenable number.

531503212 is a deficient number, since it is larger than the sum of its proper divisors (398627416).

531503212 is a wasteful number, since it uses less digits than its factorization.

531503212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132875807 (or 132875805 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 531503212 is about 23054.3534283658. The cubic root of 531503212 is about 810.0316057372.

Adding to 531503212 its reverse (212305135), we get a palindrome (743808347).

The spelling of 531503212 in words is "five hundred thirty-one million, five hundred three thousand, two hundred twelve".