12443343031 has 4 divisors (see below), whose sum is σ = 14220963472. Its totient is φ = 10665722592.

The previous prime is 12443343007. The next prime is 12443343041. The reversal of 12443343031 is 13034334421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13034334421 = 1433 ⋅9095837.

It is not a de Polignac number, because 12443343031 - 2²³ = 12434954423 is a prime.

It is a super-2 number, since 2×12443343031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12443343041) 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, 888810210 + ... + 888810223.

It is an arithmetic number, because the mean of its divisors is an integer number (3555240868).

Almost surely, 2^12443343031 is an apocalyptic number.

12443343031 is a deficient number, since it is larger than the sum of its proper divisors (1777620441).

12443343031 is an equidigital number, since it uses as much as digits as its factorization.

12443343031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1777620440.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 12443343031 its reverse (13034334421), we get a palindrome (25477677452).

The spelling of 12443343031 in words is "twelve billion, four hundred forty-three million, three hundred forty-three thousand, thirty-one".