531325103220 has 72 divisors (see below), whose sum is σ = 1629795028680. Its totient is φ = 140094704640.

The previous prime is 531325103203. The next prime is 531325103237. The reversal of 531325103220 is 22301523135.

It is a happy number.

531325103220 is a `hidden beast` number, since 5 + 3 + 1 + 325 + 10 + 322 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (531325103203) and next prime (531325103237).

It can be written as a sum of positive squares in 4 ways, for example, as 20997748836 + 510327354384 = 144906^2 + 714372^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16567161 + ... + 16599200.

It is an arithmetic number, because the mean of its divisors is an integer number (22636042065).

Almost surely, 2^531325103220 is an apocalyptic number.

It is an amenable number.

531325103220 is an abundant number, since it is smaller than the sum of its proper divisors (1098469925460).

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

531325103220 is a wasteful number, since it uses less digits than its factorization.

531325103220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33166465 (or 33166460 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 531325103220 its reverse (22301523135), we get a palindrome (553626626355).

The spelling of 531325103220 in words is "five hundred thirty-one billion, three hundred twenty-five million, one hundred three thousand, two hundred twenty".