311323453545203 has 4 divisors (see below), whose sum is σ = 339625585685688. Its totient is φ = 283021321404720.

The previous prime is 311323453545191. The next prime is 311323453545217. The reversal of 311323453545203 is 302545354323113.

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

It is a cyclic number.

It is not a de Polignac number, because 311323453545203 - 2¹⁰ = 311323453544179 is a prime.

It is a super-2 number, since 2×311323453545203² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311323453545233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14151066070226 + ... + 14151066070247.

It is an arithmetic number, because the mean of its divisors is an integer number (84906396421422).

Almost surely, 2^{311323453545203} is an apocalyptic number.

311323453545203 is a deficient number, since it is larger than the sum of its proper divisors (28302132140485).

311323453545203 is a wasteful number, since it uses less digits than its factorization.

311323453545203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28302132140484.

The product of its (nonzero) digits is 1944000, while the sum is 44.

The spelling of 311323453545203 in words is "three hundred eleven trillion, three hundred twenty-three billion, four hundred fifty-three million, five hundred forty-five thousand, two hundred three".