2311231312 has 40 divisors (see below), whose sum is σ = 4826581704. Its totient is φ = 1065813504.

The previous prime is 2311231309. The next prime is 2311231331. The reversal of 2311231312 is 2131321132.

It can be written as a sum of positive squares in 4 ways, for example, as 540841536 + 1770389776 = 23256^2 + 42076^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2311231312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281538 + ... + 289630.

Almost surely, 2^2311231312 is an apocalyptic number.

It is an amenable number.

2311231312 is an abundant number, since it is smaller than the sum of its proper divisors (2515350392).

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

2311231312 is a wasteful number, since it uses less digits than its factorization.

2311231312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9487 (or 9481 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 2311231312 is about 48075.2671547439. The cubic root of 2311231312 is about 1322.1512426878.

Adding to 2311231312 its reverse (2131321132), we get a palindrome (4442552444).

The spelling of 2311231312 in words is "two billion, three hundred eleven million, two hundred thirty-one thousand, three hundred twelve".