11885490831 has 16 divisors (see below), whose sum is σ = 16687126400. Its totient is φ = 7504044768.

The previous prime is 11885490817. The next prime is 11885490853. The reversal of 11885490831 is 13809458811.

It is a happy number.

11885490831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11885490831 - 2⁹ = 11885490319 is a prime.

It is a super-2 number, since 2×11885490831² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11885492831) 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 15 ways as a sum of consecutive naturals, for example, 138780 + ... + 207438.

It is an arithmetic number, because the mean of its divisors is an integer number (1042945400).

Almost surely, 2^11885490831 is an apocalyptic number.

11885490831 is a deficient number, since it is larger than the sum of its proper divisors (4801635569).

11885490831 is a wasteful number, since it uses less digits than its factorization.

11885490831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71718.

The product of its (nonzero) digits is 276480, while the sum is 48.

The spelling of 11885490831 in words is "eleven billion, eight hundred eighty-five million, four hundred ninety thousand, eight hundred thirty-one".