311200320030 has 32 divisors (see below), whose sum is σ = 747165917088. Its totient is φ = 82955068800.

The previous prime is 311200319999. The next prime is 311200320083. The reversal of 311200320030 is 30023002113.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 311200319991 and 311200320009.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1900261 + ... + 2057520.

It is an arithmetic number, because the mean of its divisors is an integer number (23348934909).

Almost surely, 2^311200320030 is an apocalyptic number.

311200320030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

311200320030 is an abundant number, since it is smaller than the sum of its proper divisors (435965597058).

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

311200320030 is a wasteful number, since it uses less digits than its factorization.

311200320030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3960412.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 311200320030 its reverse (30023002113), we get a palindrome (341223322143).

The spelling of 311200320030 in words is "three hundred eleven billion, two hundred million, three hundred twenty thousand, thirty".