12331142 has 8 divisors (see below), whose sum is σ = 18519600. Its totient is φ = 6157944.

The previous prime is 12331141. The next prime is 12331147. The reversal of 12331142 is 24113321.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12331142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12331141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1517 + ... + 5192.

It is an arithmetic number, because the mean of its divisors is an integer number (2314950).

Almost surely, 2^12331142 is an apocalyptic number.

12331142 is a deficient number, since it is larger than the sum of its proper divisors (6188458).

12331142 is an equidigital number, since it uses as much as digits as its factorization.

12331142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7630.

The product of its digits is 144, while the sum is 17.

The square root of 12331142 is about 3511.5725821916. The cubic root of 12331142 is about 231.0296745422.

Adding to 12331142 its reverse (24113321), we get a palindrome (36444463).

The spelling of 12331142 in words is "twelve million, three hundred thirty-one thousand, one hundred forty-two".