12142321031 has 4 divisors (see below), whose sum is σ = 12190697064. Its totient is φ = 12093945000.

The previous prime is 12142321019. The next prime is 12142321033. The reversal of 12142321031 is 13012324121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12142321031 is a prime.

It is a super-2 number, since 2×12142321031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12142320994 and 12142321012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12142321033) 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, 24187640 + ... + 24188141.

It is an arithmetic number, because the mean of its divisors is an integer number (3047674266).

Almost surely, 2^12142321031 is an apocalyptic number.

12142321031 is a deficient number, since it is larger than the sum of its proper divisors (48376033).

12142321031 is an equidigital number, since it uses as much as digits as its factorization.

12142321031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48376032.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12142321031 its reverse (13012324121), we get a palindrome (25154645152).

The spelling of 12142321031 in words is "twelve billion, one hundred forty-two million, three hundred twenty-one thousand, thirty-one".