311213221212199 has 4 divisors (see below), whose sum is σ = 311276617676920. Its totient is φ = 311149824747480.

The previous prime is 311213221212193. The next prime is 311213221212209. The reversal of 311213221212199 is 991212122312113.

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

It is a cyclic number.

It is not a de Polignac number, because 311213221212199 - 2¹³ = 311213221204007 is a prime.

It is a super-2 number, since 2×311213221212199² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311213221212193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31698224997 + ... + 31698234814.

It is an arithmetic number, because the mean of its divisors is an integer number (77819154419230).

Almost surely, 2^{311213221212199} is an apocalyptic number.

311213221212199 is a deficient number, since it is larger than the sum of its proper divisors (63396464721).

311213221212199 is an equidigital number, since it uses as much as digits as its factorization.

311213221212199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63396464720.

The product of its digits is 23328, while the sum is 40.

The spelling of 311213221212199 in words is "three hundred eleven trillion, two hundred thirteen billion, two hundred twenty-one million, two hundred twelve thousand, one hundred ninety-nine".