311014213011221 has 4 divisors (see below), whose sum is σ = 311261245747200. Its totient is φ = 310767180275244.

The previous prime is 311014213011209. The next prime is 311014213011223. The reversal of 311014213011221 is 122110312410113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 311014213011221 - 2²² = 311014208816917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311014213011223) 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, 123516366101 + ... + 123516368618.

It is an arithmetic number, because the mean of its divisors is an integer number (77815311436800).

Almost surely, 2^{311014213011221} is an apocalyptic number.

It is an amenable number.

311014213011221 is a deficient number, since it is larger than the sum of its proper divisors (247032735979).

311014213011221 is a wasteful number, since it uses less digits than its factorization.

311014213011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247032735978.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 311014213011221 its reverse (122110312410113), we get a palindrome (433124525421334).

The spelling of 311014213011221 in words is "three hundred eleven trillion, fourteen billion, two hundred thirteen million, eleven thousand, two hundred twenty-one".