311201322030 has 80 divisors (see below), whose sum is σ = 865640524320. Its totient is φ = 80125391808.

The previous prime is 311201321987. The next prime is 311201322043. The reversal of 311201322030 is 30223102113.

311201322030 is a `hidden beast` number, since 311 + 2 + 0 + 1 + 322 + 0 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 311201321994 and 311201322012.

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 39 ways as a sum of consecutive naturals, for example, 6600634 + ... + 6647613.

It is an arithmetic number, because the mean of its divisors is an integer number (10820506554).

Almost surely, 2^311201322030 is an apocalyptic number.

311201322030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

311201322030 is an abundant number, since it is smaller than the sum of its proper divisors (554439202290).

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

311201322030 is a wasteful number, since it uses less digits than its factorization.

311201322030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13248295 (or 13248286 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 311201322030 its reverse (30223102113), we get a palindrome (341424424143).

The spelling of 311201322030 in words is "three hundred eleven billion, two hundred one million, three hundred twenty-two thousand, thirty".