11431042500 has 60 divisors (see below), whose sum is σ = 33329893520. Its totient is φ = 3048276000.

The previous prime is 11431042457. The next prime is 11431042501. The reversal of 11431042500 is 524013411.

It is a tau number, because it is divible by the number of its divisors (60).

It is not an unprimeable number, because it can be changed into a prime (11431042501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 754570 + ... + 769569.

Almost surely, 2^11431042500 is an apocalyptic number.

11431042500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11431042500 is an abundant number, since it is smaller than the sum of its proper divisors (21898851020).

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

11431042500 is a wasteful number, since it uses less digits than its factorization.

11431042500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524166 (or 1524149 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 11431042500 its reverse (524013411), we get a palindrome (11955055911).

The spelling of 11431042500 in words is "eleven billion, four hundred thirty-one million, forty-two thousand, five hundred".