303211220312 has 192 divisors, whose sum is σ = 822665924640. Its totient is φ = 102632140800.

The previous prime is 303211220311. The next prime is 303211220359. The reversal of 303211220312 is 213022112303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303211220311) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 793862 + ... + 1112042.

Almost surely, 2^303211220312 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 303211220312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (411332962320).

303211220312 is an abundant number, since it is smaller than the sum of its proper divisors (519454704328).

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

303211220312 is a wasteful number, since it uses less digits than its factorization.

303211220312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318242 (or 318231 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 303211220312 its reverse (213022112303), we get a palindrome (516233332615).

The spelling of 303211220312 in words is "three hundred three billion, two hundred eleven million, two hundred twenty thousand, three hundred twelve".