311312112001321 has 8 divisors (see below), whose sum is σ = 321364567308800. Its totient is φ = 301260289763520.

The previous prime is 311312112001309. The next prime is 311312112001391. The reversal of 311312112001321 is 123100211213113.

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

It is a cyclic number.

It is not a de Polignac number, because 311312112001321 - 2²⁷ = 311311977783593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311312112001292 and 311312112001301.

It is not an unprimeable number, because it can be changed into a prime (311312112001301) 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, 157267941 + ... + 159235138.

It is an arithmetic number, because the mean of its divisors is an integer number (40170570913600).

Almost surely, 2^{311312112001321} is an apocalyptic number.

311312112001321 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

311312112001321 is a deficient number, since it is larger than the sum of its proper divisors (10052455307479).

311312112001321 is a wasteful number, since it uses less digits than its factorization.

311312112001321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316534839.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 311312112001321 its reverse (123100211213113), we get a palindrome (434412323214434).

The spelling of 311312112001321 in words is "three hundred eleven trillion, three hundred twelve billion, one hundred twelve million, one thousand, three hundred twenty-one".