12344031442 has 4 divisors (see below), whose sum is σ = 18516047166. Its totient is φ = 6172015720.

The previous prime is 12344031439. The next prime is 12344031443. The reversal of 12344031442 is 24413044321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24413044321 = 4283 ⋅5699987.

It can be written as a sum of positive squares in only one way, i.e., 11926605681 + 417425761 = 109209^2 + 20431^2 .

It is a super-2 number, since 2×12344031442² (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 12344031442.

It is not an unprimeable number, because it can be changed into a prime (12344031443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3086007859 + ... + 3086007862.

Almost surely, 2^12344031442 is an apocalyptic number.

12344031442 is a deficient number, since it is larger than the sum of its proper divisors (6172015724).

12344031442 is an equidigital number, since it uses as much as digits as its factorization.

12344031442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6172015723.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 12344031442 its reverse (24413044321), we get a palindrome (36757075763).

The spelling of 12344031442 in words is "twelve billion, three hundred forty-four million, thirty-one thousand, four hundred forty-two".