311320223124 has 48 divisors (see below), whose sum is σ = 733597751040. Its totient is φ = 102748487040.

The previous prime is 311320223113. The next prime is 311320223131. The reversal of 311320223124 is 421322023113.

It is a junction number, because it is equal to n+sod(n) for n = 311320223094 and 311320223103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1777654 + ... + 1944914.

It is an arithmetic number, because the mean of its divisors is an integer number (15283286480).

Almost surely, 2^311320223124 is an apocalyptic number.

It is an amenable number.

311320223124 is an abundant number, since it is smaller than the sum of its proper divisors (422277527916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311320223124 is a wasteful number, since it uses less digits than its factorization.

311320223124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168800 (or 168798 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 311320223124 its reverse (421322023113), we get a palindrome (732642246237).

The spelling of 311320223124 in words is "three hundred eleven billion, three hundred twenty million, two hundred twenty-three thousand, one hundred twenty-four".