312323021330 has 32 divisors (see below), whose sum is σ = 571517192880. Its totient is φ = 122855454720.

The previous prime is 312323021243. The next prime is 312323021333. The reversal of 312323021330 is 33120323213.

It can be written as a sum of positive squares in 8 ways, for example, as 65638952401 + 246684068929 = 256201^2 + 496673^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 312323021296 and 312323021305.

It is not an unprimeable number, because it can be changed into a prime (312323021333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3004382 + ... + 3106598.

Almost surely, 2^312323021330 is an apocalyptic number.

312323021330 is a deficient number, since it is larger than the sum of its proper divisors (259194171550).

312323021330 is a wasteful number, since it uses less digits than its factorization.

312323021330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107294.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 312323021330 its reverse (33120323213), we get a palindrome (345443344543).

The spelling of 312323021330 in words is "three hundred twelve billion, three hundred twenty-three million, twenty-one thousand, three hundred thirty".