31985048 has 8 divisors (see below), whose sum is σ = 59971980. Its totient is φ = 15992520.

The previous prime is 31985047. The next prime is 31985081. The reversal of 31985048 is 84058913.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31985047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1999058 + ... + 1999073.

Almost surely, 2^31985048 is an apocalyptic number.

It is an amenable number.

31985048 is a deficient number, since it is larger than the sum of its proper divisors (27986932).

31985048 is a wasteful number, since it uses less digits than its factorization.

31985048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3998137 (or 3998133 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 31985048 is about 5655.5325125049. The cubic root of 31985048 is about 317.4307551474.

The spelling of 31985048 in words is "thirty-one million, nine hundred eighty-five thousand, forty-eight".