12011032131 has 8 divisors (see below), whose sum is σ = 18302525184. Its totient is φ = 6863446920.

The previous prime is 12011032127. The next prime is 12011032169. The reversal of 12011032131 is 13123011021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12011032131 - 2² = 12011032127 is a prime.

It is a super-2 number, since 2×12011032131² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12011032131.

It is not an unprimeable number, because it can be changed into a prime (12011032171) 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 7 ways as a sum of consecutive naturals, for example, 285976935 + ... + 285976976.

It is an arithmetic number, because the mean of its divisors is an integer number (2287815648).

Almost surely, 2^12011032131 is an apocalyptic number.

12011032131 is a deficient number, since it is larger than the sum of its proper divisors (6291493053).

12011032131 is an equidigital number, since it uses as much as digits as its factorization.

12011032131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571953921.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12011032131 its reverse (13123011021), we get a palindrome (25134043152).

The spelling of 12011032131 in words is "twelve billion, eleven million, thirty-two thousand, one hundred thirty-one".