312032330321 has 4 divisors (see below), whose sum is σ = 314948520432. Its totient is φ = 309116140212.

The previous prime is 312032330293. The next prime is 312032330329. The reversal of 312032330321 is 123033230213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312032330321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312032330329) 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, 1458094895 + ... + 1458095108.

It is an arithmetic number, because the mean of its divisors is an integer number (78737130108).

Almost surely, 2^312032330321 is an apocalyptic number.

It is an amenable number.

312032330321 is a deficient number, since it is larger than the sum of its proper divisors (2916190111).

312032330321 is a wasteful number, since it uses less digits than its factorization.

312032330321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916190110.

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

Adding to 312032330321 its reverse (123033230213), we get a palindrome (435065560534).

The spelling of 312032330321 in words is "three hundred twelve billion, thirty-two million, three hundred thirty thousand, three hundred twenty-one".