311211121310999 has 16 divisors (see below), whose sum is σ = 384252807473472. Its totient is φ = 245446288259328.

The previous prime is 311211121310983. The next prime is 311211121311029. The reversal of 311211121310999 is 999013121112113.

It is not a de Polignac number, because 311211121310999 - 2⁴ = 311211121310983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311211121312999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5463074444 + ... + 5463131409.

It is an arithmetic number, because the mean of its divisors is an integer number (24015800467092).

Almost surely, 2^{311211121310999} is an apocalyptic number.

311211121310999 is a deficient number, since it is larger than the sum of its proper divisors (73041686162473).

311211121310999 is a wasteful number, since it uses less digits than its factorization.

311211121310999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10926206186.

The product of its (nonzero) digits is 26244, while the sum is 44.

The spelling of 311211121310999 in words is "three hundred eleven trillion, two hundred eleven billion, one hundred twenty-one million, three hundred ten thousand, nine hundred ninety-nine".