311201121001 has 8 divisors (see below), whose sum is σ = 314710155360. Its totient is φ = 307692362208.

The previous prime is 311201120999. The next prime is 311201121041. The reversal of 311201121001 is 100121102113.

It is a happy number.

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 311201121001 - 2¹ = 311201120999 is a prime.

It is a super-2 number, since 2×311201121001² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311201121041) 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, 2937190 + ... + 3041296.

It is an arithmetic number, because the mean of its divisors is an integer number (39338769420).

Almost surely, 2^311201121001 is an apocalyptic number.

It is an amenable number.

311201121001 is a deficient number, since it is larger than the sum of its proper divisors (3509034359).

311201121001 is a wasteful number, since it uses less digits than its factorization.

311201121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137783.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 311201121001 its reverse (100121102113), we get a palindrome (411322223114).

The spelling of 311201121001 in words is "three hundred eleven billion, two hundred one million, one hundred twenty-one thousand, one".