311322212993 has 8 divisors (see below), whose sum is σ = 354390503616. Its totient is φ = 270714967600.

The previous prime is 311322212983. The next prime is 311322213011. The reversal of 311322212993 is 399212223113.

It is a happy number.

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

It is not a de Polignac number, because 311322212993 - 2³² = 307027245697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311322212983) 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, 615261038 + ... + 615261543.

It is an arithmetic number, because the mean of its divisors is an integer number (44298812952).

Almost surely, 2^311322212993 is an apocalyptic number.

It is an amenable number.

311322212993 is a deficient number, since it is larger than the sum of its proper divisors (43068290623).

311322212993 is a wasteful number, since it uses less digits than its factorization.

311322212993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230522615.

The product of its digits is 34992, while the sum is 38.

The spelling of 311322212993 in words is "three hundred eleven billion, three hundred twenty-two million, two hundred twelve thousand, nine hundred ninety-three".