12143131 has 24 divisors (see below), whose sum is σ = 16604784. Its totient is φ = 8729280.

The previous prime is 12143119. The next prime is 12143137. The reversal of 12143131 is 13134121.

12143131 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 12143131 - 2⁵ = 12143099 is a prime.

It is a super-2 number, since 2×12143131² = 294911260966322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12143137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6141 + ... + 7873.

It is an arithmetic number, because the mean of its divisors is an integer number (691866).

Almost surely, 2^12143131 is an apocalyptic number.

12143131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12143131 is a deficient number, since it is larger than the sum of its proper divisors (4461653).

12143131 is a wasteful number, since it uses less digits than its factorization.

12143131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771 (or 1764 counting only the distinct ones).

The product of its digits is 72, while the sum is 16.

The square root of 12143131 is about 3484.6995566333. The cubic root of 12143131 is about 229.8494982632.

Adding to 12143131 its reverse (13134121), we get a palindrome (25277252).

The spelling of 12143131 in words is "twelve million, one hundred forty-three thousand, one hundred thirty-one".