311133301321 has 4 divisors (see below), whose sum is σ = 311981076352. Its totient is φ = 310285526292.

The previous prime is 311133301319. The next prime is 311133301357. The reversal of 311133301321 is 123103331113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123103331113 = 7 ⋅17586190159.

It is a cyclic number.

It is not a de Polignac number, because 311133301321 - 2¹ = 311133301319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311133301292 and 311133301301.

It is not an unprimeable number, because it can be changed into a prime (311133301421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423886965 + ... + 423887698.

It is an arithmetic number, because the mean of its divisors is an integer number (77995269088).

Almost surely, 2^311133301321 is an apocalyptic number.

It is an amenable number.

311133301321 is a deficient number, since it is larger than the sum of its proper divisors (847775031).

311133301321 is an equidigital number, since it uses as much as digits as its factorization.

311133301321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847775030.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 311133301321 its reverse (123103331113), we get a palindrome (434236632434).

The spelling of 311133301321 in words is "three hundred eleven billion, one hundred thirty-three million, three hundred one thousand, three hundred twenty-one".