2312101320 has 128 divisors (see below), whose sum is σ = 7392124800. Its totient is φ = 576516096.

The previous prime is 2312101307. The next prime is 2312101327. The reversal of 2312101320 is 231012132.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2312101320.

It is not an unprimeable number, because it can be changed into a prime (2312101327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 316671 + ... + 323889.

It is an arithmetic number, because the mean of its divisors is an integer number (57750975).

Almost surely, 2^2312101320 is an apocalyptic number.

2312101320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2312101320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3696062400).

2312101320 is an abundant number, since it is smaller than the sum of its proper divisors (5080023480).

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

2312101320 is a wasteful number, since it uses less digits than its factorization.

2312101320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7407 (or 7403 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2312101320 is about 48084.3146982465. The cubic root of 2312101320 is about 1322.3171193283.

Adding to 2312101320 its reverse (231012132), we get a palindrome (2543113452).

The spelling of 2312101320 in words is "two billion, three hundred twelve million, one hundred one thousand, three hundred twenty".