312320111321 has 8 divisors (see below), whose sum is σ = 313520226624. Its totient is φ = 311121542160.

The previous prime is 312320111309. The next prime is 312320111347. The reversal of 312320111321 is 123111023213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312320111321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312320111293 and 312320111302.

It is not an unprimeable number, because it can be changed into a prime (312320110321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19055 + ... + 790571.

It is an arithmetic number, because the mean of its divisors is an integer number (39190028328).

Almost surely, 2^312320111321 is an apocalyptic number.

It is an amenable number.

312320111321 is a deficient number, since it is larger than the sum of its proper divisors (1200115303).

312320111321 is a wasteful number, since it uses less digits than its factorization.

312320111321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773071.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 312320111321 its reverse (123111023213), we get a palindrome (435431134534).

The spelling of 312320111321 in words is "three hundred twelve billion, three hundred twenty million, one hundred eleven thousand, three hundred twenty-one".