2312131332 has 96 divisors (see below), whose sum is σ = 6409331712. Its totient is φ = 634939776.

The previous prime is 2312131319. The next prime is 2312131351. The reversal of 2312131332 is 2331312132.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 2312131299 and 2312131308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 253483 + ... + 262445.

It is an arithmetic number, because the mean of its divisors is an integer number (66763872).

Almost surely, 2^2312131332 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 2312131332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3204665856).

2312131332 is an abundant number, since it is smaller than the sum of its proper divisors (4097200380).

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

2312131332 is a wasteful number, since it uses less digits than its factorization.

2312131332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9097 (or 9095 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 2312131332 is about 48084.6267740533. The cubic root of 2312131332 is about 1322.3228407053.

Adding to 2312131332 its reverse (2331312132), we get a palindrome (4643443464).

The spelling of 2312131332 in words is "two billion, three hundred twelve million, one hundred thirty-one thousand, three hundred thirty-two".