12011131 has 8 divisors (see below), whose sum is σ = 13148928. Its totient is φ = 10881000.

The previous prime is 12011123. The next prime is 12011143. The reversal of 12011131 is 13111021.

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

It is a cyclic number.

It is not a de Polignac number, because 12011131 - 2³ = 12011123 is a prime.

It is a super-2 number, since 2×12011131² = 288534535798322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12011171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1666 + ... + 5176.

It is an arithmetic number, because the mean of its divisors is an integer number (1643616).

Almost surely, 2^12011131 is an apocalyptic number.

12011131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12011131 is a deficient number, since it is larger than the sum of its proper divisors (1137797).

12011131 is a wasteful number, since it uses less digits than its factorization.

12011131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3833.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 12011131 is about 3465.7078642032. The cubic root of 12011131 is about 229.0136144916.

Adding to 12011131 its reverse (13111021), we get a palindrome (25122152).

It can be divided in two parts, 1201 and 1131, that added together give a palindrome (2332).

The spelling of 12011131 in words is "twelve million, eleven thousand, one hundred thirty-one".