31445889016 has 16 divisors (see below), whose sum is σ = 58981564800. Its totient is φ = 15717471744.

The previous prime is 31445889011. The next prime is 31445889017. The reversal of 31445889016 is 61098854413.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31445889011) 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, 659625 + ... + 705688.

It is an arithmetic number, because the mean of its divisors is an integer number (3686347800).

Almost surely, 2^31445889016 is an apocalyptic number.

It is an amenable number.

31445889016 is a deficient number, since it is larger than the sum of its proper divisors (27535675784).

31445889016 is a wasteful number, since it uses less digits than its factorization.

31445889016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368198 (or 1368194 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 49.

The spelling of 31445889016 in words is "thirty-one billion, four hundred forty-five million, eight hundred eighty-nine thousand, sixteen".