311001212321201 has 4 divisors (see below), whose sum is σ = 311001281568804. Its totient is φ = 311001143073600.

The previous prime is 311001212321141. The next prime is 311001212321291. The reversal of 311001212321201 is 102123212100113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 174503465920576 + 136497746400625 = 13209976^2 + 11683225^2 .

It is a cyclic number.

It is not a de Polignac number, because 311001212321201 - 2¹⁰ = 311001212320177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311001212321291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27382220 + ... + 37037661.

It is an arithmetic number, because the mean of its divisors is an integer number (77750320392201).

Almost surely, 2^{311001212321201} is an apocalyptic number.

It is an amenable number.

311001212321201 is a deficient number, since it is larger than the sum of its proper divisors (69247603).

311001212321201 is an equidigital number, since it uses as much as digits as its factorization.

311001212321201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69247602.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 311001212321201 its reverse (102123212100113), we get a palindrome (413124424421314).

The spelling of 311001212321201 in words is "three hundred eleven trillion, one billion, two hundred twelve million, three hundred twenty-one thousand, two hundred one".