31444404443 has 4 divisors (see below), whose sum is σ = 31670623320. Its totient is φ = 31218185568.

The previous prime is 31444404367. The next prime is 31444404451. The reversal of 31444404443 is 34440444413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34440444413 = 43889 ⋅784717.

It is a cyclic number.

It is not a de Polignac number, because 31444404443 - 2¹² = 31444400347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31444404463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113109230 + ... + 113109507.

It is an arithmetic number, because the mean of its divisors is an integer number (7917655830).

Almost surely, 2^31444404443 is an apocalyptic number.

31444404443 is a deficient number, since it is larger than the sum of its proper divisors (226218877).

31444404443 is a wasteful number, since it uses less digits than its factorization.

31444404443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226218876.

The product of its (nonzero) digits is 147456, while the sum is 35.

Adding to 31444404443 its reverse (34440444413), we get a palindrome (65884848856).

The spelling of 31444404443 in words is "thirty-one billion, four hundred forty-four million, four hundred four thousand, four hundred forty-three".