311045305213 has 8 divisors (see below), whose sum is σ = 321841696256. Its totient is φ = 300296581200.

The previous prime is 311045305211. The next prime is 311045305223. The reversal of 311045305213 is 312503540113.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 311045305213 - 2¹ = 311045305211 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 (311045305211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11903481 + ... + 11929582.

It is an arithmetic number, because the mean of its divisors is an integer number (40230212032).

Almost surely, 2^311045305213 is an apocalyptic number.

It is an amenable number.

311045305213 is a deficient number, since it is larger than the sum of its proper divisors (10796391043).

311045305213 is a wasteful number, since it uses less digits than its factorization.

311045305213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23833515.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 311045305213 its reverse (312503540113), we get a palindrome (623548845326).

The spelling of 311045305213 in words is "three hundred eleven billion, forty-five million, three hundred five thousand, two hundred thirteen".