2311723312 has 40 divisors (see below), whose sum is σ = 4740859760. Its totient is φ = 1088951040.

The previous prime is 2311723279. The next prime is 2311723327. The reversal of 2311723312 is 2133271132.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34018 + ... + 76030.

It is an arithmetic number, because the mean of its divisors is an integer number (118521494).

Almost surely, 2^2311723312 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 2311723312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2370429880).

2311723312 is an abundant number, since it is smaller than the sum of its proper divisors (2429136448).

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

2311723312 is a wasteful number, since it uses less digits than its factorization.

2311723312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42221 (or 42215 counting only the distinct ones).

The product of its digits is 1512, while the sum is 25.

The square root of 2311723312 is about 48080.3838587006. The cubic root of 2311723312 is about 1322.2450530384.

Adding to 2311723312 its reverse (2133271132), we get a palindrome (4444994444).

The spelling of 2311723312 in words is "two billion, three hundred eleven million, seven hundred twenty-three thousand, three hundred twelve".