2321312012 has 6 divisors (see below), whose sum is σ = 4062296028. Its totient is φ = 1160656004.

The previous prime is 2321312011. The next prime is 2321312027. The reversal of 2321312012 is 2102131232.

It is not an unprimeable number, because it can be changed into a prime (2321312011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 290163998 + ... + 290164005.

It is an arithmetic number, because the mean of its divisors is an integer number (677049338).

Almost surely, 2^2321312012 is an apocalyptic number.

It is an amenable number.

2321312012 is a deficient number, since it is larger than the sum of its proper divisors (1740984016).

2321312012 is a wasteful number, since it uses less digits than its factorization.

2321312012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580328007 (or 580328005 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2321312012 is about 48179.9959734328. The cubic root of 2321312012 is about 1324.0706927628.

Adding to 2321312012 its reverse (2102131232), we get a palindrome (4423443244).

The spelling of 2321312012 in words is "two billion, three hundred twenty-one million, three hundred twelve thousand, twelve".