2312321320 has 16 divisors (see below), whose sum is σ = 5202723060. Its totient is φ = 924928512.

The previous prime is 2312321311. The next prime is 2312321329. The reversal of 2312321320 is 231232132.

It is an interprime number because it is at equal distance from previous prime (2312321311) and next prime (2312321329).

It can be written as a sum of positive squares in 2 ways, for example, as 2045391076 + 266930244 = 45226^2 + 16338^2 .

It is not an unprimeable number, because it can be changed into a prime (2312321329) 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, 28903977 + ... + 28904056.

Almost surely, 2^2312321320 is an apocalyptic number.

2312321320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2312321320 is an abundant number, since it is smaller than the sum of its proper divisors (2890401740).

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

2312321320 is a wasteful number, since it uses less digits than its factorization.

2312321320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57808044 (or 57808040 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2312321320 is about 48086.6022921146. The cubic root of 2312321320 is about 1322.3590581680.

Adding to 2312321320 its reverse (231232132), we get a palindrome (2543553452).

The spelling of 2312321320 in words is "two billion, three hundred twelve million, three hundred twenty-one thousand, three hundred twenty".