2131545404 has 12 divisors (see below), whose sum is σ = 3739603224. Its totient is φ = 1063087344.

The previous prime is 2131545397. The next prime is 2131545413. The reversal of 2131545404 is 4045451312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 669554 + ... + 672729.

It is an arithmetic number, because the mean of its divisors is an integer number (311633602).

Almost surely, 2^2131545404 is an apocalyptic number.

It is an amenable number.

2131545404 is a deficient number, since it is larger than the sum of its proper divisors (1608057820).

2131545404 is a wasteful number, since it uses less digits than its factorization.

2131545404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342684 (or 1342682 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 2131545404 is about 46168.6625753876. The cubic root of 2131545404 is about 1286.9594483779.

Adding to 2131545404 its reverse (4045451312), we get a palindrome (6176996716).

The spelling of 2131545404 in words is "two billion, one hundred thirty-one million, five hundred forty-five thousand, four hundred four".