2311321312 has 24 divisors (see below), whose sum is σ = 4697203392. Its totient is φ = 1118380800.

The previous prime is 2311321289. The next prime is 2311321319. The reversal of 2311321312 is 2131231132.

2311321312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2311321312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311321319) 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, 1163989 + ... + 1165972.

It is an arithmetic number, because the mean of its divisors is an integer number (195716808).

Almost surely, 2^2311321312 is an apocalyptic number.

It is an amenable number.

2311321312 is an abundant number, since it is smaller than the sum of its proper divisors (2385882080).

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

2311321312 is a wasteful number, since it uses less digits than its factorization.

2311321312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330002 (or 2329994 counting only the distinct ones).

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

The square root of 2311321312 is about 48076.2031778717. The cubic root of 2311321312 is about 1322.1684041127.

Adding to 2311321312 its reverse (2131231132), we get a palindrome (4442552444).

The spelling of 2311321312 in words is "two billion, three hundred eleven million, three hundred twenty-one thousand, three hundred twelve".