31985673901248 has 56 divisors (see below), whose sum is σ = 84647600171568. Its totient is φ = 10659518012416.

The previous prime is 31985673901219. The next prime is 31985673901267. The reversal of 31985673901248 is 84210937658913.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17676411 + ... + 19401722.

It is an arithmetic number, because the mean of its divisors is an integer number (1511564288778).

It is a 1-persistent number, because it is pandigital, but 2⋅31985673901248 = 63971347802496 is not.

Almost surely, 2^{31985673901248} is an apocalyptic number.

It is an amenable number.

31985673901248 is an abundant number, since it is smaller than the sum of its proper divisors (52661926270320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31985673901248 is a wasteful number, since it uses less digits than its factorization.

31985673901248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37082641 (or 37082631 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 66.

The spelling of 31985673901248 in words is "thirty-one trillion, nine hundred eighty-five billion, six hundred seventy-three million, nine hundred one thousand, two hundred forty-eight".