531215405310032 has 20 divisors (see below), whose sum is σ = 1029880024620480. Its totient is φ = 265439915085408.

The previous prime is 531215405309999. The next prime is 531215405310041. The reversal of 531215405310032 is 230013504512135.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 531215405309974 and 531215405310001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10486696982 + ... + 10486747637.

It is an arithmetic number, because the mean of its divisors is an integer number (51494001231024).

Almost surely, 2^{531215405310032} is an apocalyptic number.

It is an amenable number.

531215405310032 is a deficient number, since it is larger than the sum of its proper divisors (498664619310448).

531215405310032 is a wasteful number, since it uses less digits than its factorization.

531215405310032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20973446210 (or 20973446204 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 35.

Adding to 531215405310032 its reverse (230013504512135), we get a palindrome (761228909822167).

The spelling of 531215405310032 in words is "five hundred thirty-one trillion, two hundred fifteen billion, four hundred five million, three hundred ten thousand, thirty-two".