311310221323121 has 4 divisors (see below), whose sum is σ = 315694872327744. Its totient is φ = 306925570318500.

The previous prime is 311310221323099. The next prime is 311310221323183. The reversal of 311310221323121 is 121323122013113.

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 311310221323121 - 2¹⁸ = 311310221060977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311310221323021) 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, 2192325502205 + ... + 2192325502346.

It is an arithmetic number, because the mean of its divisors is an integer number (78923718081936).

Almost surely, 2^{311310221323121} is an apocalyptic number.

It is an amenable number.

311310221323121 is a deficient number, since it is larger than the sum of its proper divisors (4384651004623).

311310221323121 is an equidigital number, since it uses as much as digits as its factorization.

311310221323121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4384651004622.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 311310221323121 its reverse (121323122013113), we get a palindrome (432633343336234).

The spelling of 311310221323121 in words is "three hundred eleven trillion, three hundred ten billion, two hundred twenty-one million, three hundred twenty-three thousand, one hundred twenty-one".