311103103010213 has 4 divisors (see below), whose sum is σ = 319511294983500. Its totient is φ = 302694911036928.

The previous prime is 311103103010209. The next prime is 311103103010239. The reversal of 311103103010213 is 312010301301113.

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

It can be written as a sum of positive squares in 2 ways, for example, as 152855810799169 + 158247292211044 = 12363487^2 + 12579638^2 .

It is a cyclic number.

It is not a de Polignac number, because 311103103010213 - 2² = 311103103010209 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 (311103103010113) 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, 4204095986588 + ... + 4204095986661.

It is an arithmetic number, because the mean of its divisors is an integer number (79877823745875).

Almost surely, 2^{311103103010213} is an apocalyptic number.

It is an amenable number.

311103103010213 is a deficient number, since it is larger than the sum of its proper divisors (8408191973287).

311103103010213 is an equidigital number, since it uses as much as digits as its factorization.

311103103010213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8408191973286.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 311103103010213 its reverse (312010301301113), we get a palindrome (623113404311326).

The spelling of 311103103010213 in words is "three hundred eleven trillion, one hundred three billion, one hundred three million, ten thousand, two hundred thirteen".