311110020030 has 32 divisors (see below), whose sum is σ = 779127704064. Its totient is φ = 79355599136.

The previous prime is 311110019971. The next prime is 311110020031. The reversal of 311110020030 is 30020011113.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 311110019988 and 311110020015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311110020031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225441354 + ... + 225442733.

It is an arithmetic number, because the mean of its divisors is an integer number (24347740752).

Almost surely, 2^311110020030 is an apocalyptic number.

311110020030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

311110020030 is an abundant number, since it is smaller than the sum of its proper divisors (468017684034).

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

311110020030 is a wasteful number, since it uses less digits than its factorization.

311110020030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450884120.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 311110020030 its reverse (30020011113), we get a palindrome (341130031143).

The spelling of 311110020030 in words is "three hundred eleven billion, one hundred ten million, twenty thousand, thirty".