303421520051312 has 160 divisors (see below), whose sum is σ = 640001214800640. Its totient is φ = 138521573498880.

The previous prime is 303421520051297. The next prime is 303421520051401. The reversal of 303421520051312 is 213150025124303.

It is a super-2 number, since 2×303421520051312² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 31808520239 + ... + 31808529777.

It is an arithmetic number, because the mean of its divisors is an integer number (4000007592504).

Almost surely, 2^{303421520051312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 303421520051312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320000607400320).

303421520051312 is an abundant number, since it is smaller than the sum of its proper divisors (336579694749328).

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

303421520051312 is a wasteful number, since it uses less digits than its factorization.

303421520051312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13351 (or 13345 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 303421520051312 its reverse (213150025124303), we get a palindrome (516571545175615).

The spelling of 303421520051312 in words is "three hundred three trillion, four hundred twenty-one billion, five hundred twenty million, fifty-one thousand, three hundred twelve".