521304331012 has 12 divisors (see below), whose sum is σ = 912292601920. Its totient is φ = 260649301896.

The previous prime is 521304331003. The next prime is 521304331049. The reversal of 521304331012 is 210133403125.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276312 + ... + 1057807.

Almost surely, 2^521304331012 is an apocalyptic number.

It is an amenable number.

521304331012 is a deficient number, since it is larger than the sum of its proper divisors (390988270908).

521304331012 is a wasteful number, since it uses less digits than its factorization.

521304331012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431810 (or 1431808 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 521304331012 its reverse (210133403125), we get a palindrome (731437734137).

The spelling of 521304331012 in words is "five hundred twenty-one billion, three hundred four million, three hundred thirty-one thousand, twelve".