311321203313 has 8 divisors (see below), whose sum is σ = 312213900000. Its totient is φ = 310429582848.

The previous prime is 311321203309. The next prime is 311321203327. The reversal of 311321203313 is 313302123113.

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 311321203313 - 2² = 311321203309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311321203343) 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, 312113 + ... + 848561.

It is an arithmetic number, because the mean of its divisors is an integer number (39026737500).

Almost surely, 2^311321203313 is an apocalyptic number.

It is an amenable number.

311321203313 is a deficient number, since it is larger than the sum of its proper divisors (892696687).

311321203313 is a wasteful number, since it uses less digits than its factorization.

311321203313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538111.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 311321203313 its reverse (313302123113), we get a palindrome (624623326426).

The spelling of 311321203313 in words is "three hundred eleven billion, three hundred twenty-one million, two hundred three thousand, three hundred thirteen".