31928485663280 has 40 divisors (see below), whose sum is σ = 75128111461872. Its totient is φ = 12617522042624.

The previous prime is 31928485663267. The next prime is 31928485663289. The reversal of 31928485663280 is 8236658482913.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (31928485663289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2404246799 + ... + 2404260078.

Almost surely, 2^{31928485663280} is an apocalyptic number.

It is an amenable number.

31928485663280 is an abundant number, since it is smaller than the sum of its proper divisors (43199625798592).

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

31928485663280 is a wasteful number, since it uses less digits than its factorization.

31928485663280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4808506973 (or 4808506967 counting only the distinct ones).

The product of its (nonzero) digits is 119439360, while the sum is 65.

The spelling of 31928485663280 in words is "thirty-one trillion, nine hundred twenty-eight billion, four hundred eighty-five million, six hundred sixty-three thousand, two hundred eighty".