311432030312 has 64 divisors (see below), whose sum is σ = 654133006800. Its totient is φ = 138014392320.

The previous prime is 311432030309. The next prime is 311432030387. The reversal of 311432030312 is 213030234113.

It can be written as a sum of positive squares in 8 ways, for example, as 320195236 + 311111835076 = 17894^2 + 557774^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260648 + ... + 831144.

Almost surely, 2^311432030312 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 311432030312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327066503400).

311432030312 is an abundant number, since it is smaller than the sum of its proper divisors (342700976488).

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

311432030312 is a wasteful number, since it uses less digits than its factorization.

311432030312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570726 (or 570722 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 311432030312 its reverse (213030234113), we get a palindrome (524462264425).

The spelling of 311432030312 in words is "three hundred eleven billion, four hundred thirty-two million, thirty thousand, three hundred twelve".