11531240309824 has 21 divisors (see below), whose sum is σ = 22882358897751. Its totient is φ = 5765606571840.

The previous prime is 11531240309791. The next prime is 11531240309867. The reversal of 11531240309824 is 42890304213511.

The square root of 11531240309824 is 3395768.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 26953909 + ... + 27378379.

Almost surely, 2^{11531240309824} is an apocalyptic number.

11531240309824 is the 3395768-th square number.

It is an amenable number.

11531240309824 is a deficient number, since it is larger than the sum of its proper divisors (11351118587927).

11531240309824 is an frugal number, since it uses more digits than its factorization.

11531240309824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848954 (or 424473 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 11531240309824 in words is "eleven trillion, five hundred thirty-one billion, two hundred forty million, three hundred nine thousand, eight hundred twenty-four".