311305040004 has 24 divisors (see below), whose sum is σ = 830146773568. Its totient is φ = 88944297120.

The previous prime is 311305040003. The next prime is 311305040021. The reversal of 311305040004 is 400040503113.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (311305040003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1853006107 + ... + 1853006274.

Almost surely, 2^311305040004 is an apocalyptic number.

It is an amenable number.

311305040004 is an abundant number, since it is smaller than the sum of its proper divisors (518841733564).

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

311305040004 is a wasteful number, since it uses less digits than its factorization.

311305040004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3706012395 (or 3706012393 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 311305040004 its reverse (400040503113), we get a palindrome (711345543117).

The spelling of 311305040004 in words is "three hundred eleven billion, three hundred five million, forty thousand, four".