311313203323 has 4 divisors (see below), whose sum is σ = 311333782120. Its totient is φ = 311292624528.

The previous prime is 311313203309. The next prime is 311313203381. The reversal of 311313203323 is 323302313113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323302313113 = 13 ⋅24869408701.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311313203323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311313203023) 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, 10266690 + ... + 10296967.

It is an arithmetic number, because the mean of its divisors is an integer number (77833445530).

Almost surely, 2^311313203323 is an apocalyptic number.

311313203323 is a deficient number, since it is larger than the sum of its proper divisors (20578797).

311313203323 is a wasteful number, since it uses less digits than its factorization.

311313203323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20578796.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 311313203323 its reverse (323302313113), we get a palindrome (634615516436).

The spelling of 311313203323 in words is "three hundred eleven billion, three hundred thirteen million, two hundred three thousand, three hundred twenty-three".