531304320310212 has 72 divisors (see below), whose sum is σ = 1247704792291776. Its totient is φ = 175965899907456.

The previous prime is 531304320310189. The next prime is 531304320310241. The reversal of 531304320310212 is 212013023403135.

It is a super-2 number, since 2×531304320310212² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 531304320310212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 305598378 + ... + 307332030.

Almost surely, 2^{531304320310212} is an apocalyptic number.

It is an amenable number.

531304320310212 is an abundant number, since it is smaller than the sum of its proper divisors (716400471981564).

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

531304320310212 is a wasteful number, since it uses less digits than its factorization.

531304320310212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734605 (or 1734374 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 531304320310212 its reverse (212013023403135), we get a palindrome (743317343713347).

The spelling of 531304320310212 in words is "five hundred thirty-one trillion, three hundred four billion, three hundred twenty million, three hundred ten thousand, two hundred twelve".