30311302231312 has 20 divisors (see below), whose sum is σ = 58730417335260. Its totient is φ = 15155065499648.

The previous prime is 30311302231291. The next prime is 30311302231319. The reversal of 30311302231312 is 21313220311303.

It can be written as a sum of positive squares in 2 ways, for example, as 28729985921296 + 1581316310016 = 5360036^2 + 1257504^2 .

It is not an unprimeable number, because it can be changed into a prime (30311302231319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36173833 + ... + 37002280.

It is an arithmetic number, because the mean of its divisors is an integer number (2936520866763).

Almost surely, 2^{30311302231312} is an apocalyptic number.

It is an amenable number.

30311302231312 is a deficient number, since it is larger than the sum of its proper divisors (28419115103948).

30311302231312 is a wasteful number, since it uses less digits than its factorization.

30311302231312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73202010 (or 73202004 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 30311302231312 its reverse (21313220311303), we get a palindrome (51624522542615).

The spelling of 30311302231312 in words is "thirty trillion, three hundred eleven billion, three hundred two million, two hundred thirty-one thousand, three hundred twelve".