2731811004 has 72 divisors (see below), whose sum is σ = 7451483312. Its totient is φ = 838874880.

The previous prime is 2731811003. The next prime is 2731811023. The reversal of 2731811004 is 4001181372.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2731811003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 239184 + ... + 250344.

Almost surely, 2^2731811004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2731811004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3725741656).

2731811004 is an abundant number, since it is smaller than the sum of its proper divisors (4719672308).

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

2731811004 is a wasteful number, since it uses less digits than its factorization.

2731811004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11707 (or 11702 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 2731811004 is about 52266.7294174793. The cubic root of 2731811004 is about 1397.9239645016.

Adding to 2731811004 its reverse (4001181372), we get a palindrome (6732992376).

The spelling of 2731811004 in words is "two billion, seven hundred thirty-one million, eight hundred eleven thousand, four".