2131115404 has 36 divisors (see below), whose sum is σ = 4105590832. Its totient is φ = 967206240.

The previous prime is 2131115401. The next prime is 2131115417. The reversal of 2131115404 is 4045111312.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (2131115401) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 351769 + ... + 357775.

Almost surely, 2^2131115404 is an apocalyptic number.

It is an amenable number.

2131115404 is a deficient number, since it is larger than the sum of its proper divisors (1974475428).

2131115404 is a wasteful number, since it uses less digits than its factorization.

2131115404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6766 (or 6753 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 2131115404 is about 46164.0055021225. The cubic root of 2131115404 is about 1286.8729024415.

Adding to 2131115404 its reverse (4045111312), we get a palindrome (6176226716).

The spelling of 2131115404 in words is "two billion, one hundred thirty-one million, one hundred fifteen thousand, four hundred four".