311320023103 has 4 divisors (see below), whose sum is σ = 315966590680. Its totient is φ = 306673455528.

The previous prime is 311320023097. The next prime is 311320023139. The reversal of 311320023103 is 301320023113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301320023113 = 276083 ⋅1091411.

It is a cyclic number.

It is not a de Polignac number, because 311320023103 - 2¹³ = 311320014911 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 (311320023143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2323283688 + ... + 2323283821.

It is an arithmetic number, because the mean of its divisors is an integer number (78991647670).

Almost surely, 2^311320023103 is an apocalyptic number.

311320023103 is a deficient number, since it is larger than the sum of its proper divisors (4646567577).

311320023103 is an equidigital number, since it uses as much as digits as its factorization.

311320023103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4646567576.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 311320023103 its reverse (301320023113), we get a palindrome (612640046216).

The spelling of 311320023103 in words is "three hundred eleven billion, three hundred twenty million, twenty-three thousand, one hundred three".