531631612 has 12 divisors (see below), whose sum is σ = 932949360. Its totient is φ = 265074656.

The previous prime is 531631603. The next prime is 531631613. The reversal of 531631612 is 216136135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531631613) 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 in 3 ways as a sum of consecutive naturals, for example, 183673 + ... + 186544.

It is an arithmetic number, because the mean of its divisors is an integer number (77745780).

Almost surely, 2^531631612 is an apocalyptic number.

It is an amenable number.

531631612 is a deficient number, since it is larger than the sum of its proper divisors (401317748).

531631612 is a wasteful number, since it uses less digits than its factorization.

531631612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370580 (or 370578 counting only the distinct ones).

The product of its digits is 3240, while the sum is 28.

The square root of 531631612 is about 23057.1379837134. The cubic root of 531631612 is about 810.0968293530.

Adding to 531631612 its reverse (216136135), we get a palindrome (747767747).

The spelling of 531631612 in words is "five hundred thirty-one million, six hundred thirty-one thousand, six hundred twelve".