311322213030 has 64 divisors (see below), whose sum is σ = 748451233728. Its totient is φ = 82877399040.

The previous prime is 311322213019. The next prime is 311322213073. The reversal of 311322213030 is 30312223113.

It is a junction number, because it is equal to n+sod(n) for n = 311322212988 and 311322213006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57215110 + ... + 57220550.

It is an arithmetic number, because the mean of its divisors is an integer number (11694550527).

Almost surely, 2^311322213030 is an apocalyptic number.

311322213030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

311322213030 is an abundant number, since it is smaller than the sum of its proper divisors (437129020698).

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

311322213030 is a wasteful number, since it uses less digits than its factorization.

311322213030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8361.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 311322213030 its reverse (30312223113), we get a palindrome (341634436143).

The spelling of 311322213030 in words is "three hundred eleven billion, three hundred twenty-two million, two hundred thirteen thousand, thirty".