31443400444 has 12 divisors (see below), whose sum is σ = 55117818000. Its totient is φ = 15695452448.

The previous prime is 31443400427. The next prime is 31443400451. The reversal of 31443400444 is 44400434413.

It is a congruent number.

It is an unprimeable number.

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, 6559249 + ... + 6564040.

It is an arithmetic number, because the mean of its divisors is an integer number (4593151500).

Almost surely, 2^31443400444 is an apocalyptic number.

It is an amenable number.

31443400444 is a deficient number, since it is larger than the sum of its proper divisors (23674417556).

31443400444 is a wasteful number, since it uses less digits than its factorization.

31443400444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13123892 (or 13123890 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 31443400444 its reverse (44400434413), we get a palindrome (75843834857).

The spelling of 31443400444 in words is "thirty-one billion, four hundred forty-three million, four hundred thousand, four hundred forty-four".