311322021313 has 8 divisors (see below), whose sum is σ = 314822014848. Its totient is φ = 307841418864.

The previous prime is 311322021233. The next prime is 311322021337. The reversal of 311322021313 is 313120223113.

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-311322021313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311322021383) 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, 4815481 + ... + 4879702.

It is an arithmetic number, because the mean of its divisors is an integer number (39352751856).

Almost surely, 2^311322021313 is an apocalyptic number.

It is an amenable number.

311322021313 is a deficient number, since it is larger than the sum of its proper divisors (3499993535).

311322021313 is a wasteful number, since it uses less digits than its factorization.

311322021313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9695543.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 311322021313 its reverse (313120223113), we get a palindrome (624442244426).

The spelling of 311322021313 in words is "three hundred eleven billion, three hundred twenty-two million, twenty-one thousand, three hundred thirteen".