11431025531532 has 18 divisors (see below), whose sum is σ = 28895092315908. Its totient is φ = 3810341843832.

The previous prime is 11431025531531. The next prime is 11431025531641. The reversal of 11431025531532 is 23513552013411.

It is a happy number.

11431025531532 is a `hidden beast` number, since 1 + 1 + 4 + 310 + 25 + 5 + 315 + 3 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 317528486987 = 11431025531532 / (1 + 1 + 4 + 3 + 1 + 0 + 2 + 5 + 5 + 3 + 1 + 5 + 3 + 2).

It is not an unprimeable number, because it can be changed into a prime (11431025531531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 158764243458 + ... + 158764243529.

Almost surely, 2^{11431025531532} is an apocalyptic number.

11431025531532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11431025531532 is an abundant number, since it is smaller than the sum of its proper divisors (17464066784376).

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

11431025531532 is a wasteful number, since it uses less digits than its factorization.

11431025531532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317528486997 (or 317528486992 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

Adding to 11431025531532 its reverse (23513552013411), we get a palindrome (34944577544943).

The spelling of 11431025531532 in words is "eleven trillion, four hundred thirty-one billion, twenty-five million, five hundred thirty-one thousand, five hundred thirty-two".