311121450044209 has 24 divisors (see below), whose sum is σ = 368187022397376. Its totient is φ = 262063370772000.

The previous prime is 311121450044159. The next prime is 311121450044257. The reversal of 311121450044209 is 902440054121113.

It is not a de Polignac number, because 311121450044209 - 2¹⁵ = 311121450011441 is a prime.

It is a super-2 number, since 2×311121450044209² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (311121450014209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44442397 + ... + 50964394.

It is an arithmetic number, because the mean of its divisors is an integer number (15341125933224).

Almost surely, 2^{311121450044209} is an apocalyptic number.

It is an amenable number.

311121450044209 is a deficient number, since it is larger than the sum of its proper divisors (57065572353167).

311121450044209 is a wasteful number, since it uses less digits than its factorization.

311121450044209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95407957 (or 95407950 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 311121450044209 in words is "three hundred eleven trillion, one hundred twenty-one billion, four hundred fifty million, forty-four thousand, two hundred nine".