31385478282 has 16 divisors (see below), whose sum is σ = 66074691360. Its totient is φ = 9911203632.

The previous prime is 31385478277. The next prime is 31385478329. The reversal of 31385478282 is 28287458313.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137655493 + ... + 137655720.

It is an arithmetic number, because the mean of its divisors is an integer number (4129668210).

Almost surely, 2^31385478282 is an apocalyptic number.

31385478282 is an abundant number, since it is smaller than the sum of its proper divisors (34689213078).

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

31385478282 is a wasteful number, since it uses less digits than its factorization.

31385478282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275311237.

The product of its digits is 2580480, while the sum is 51.

The spelling of 31385478282 in words is "thirty-one billion, three hundred eighty-five million, four hundred seventy-eight thousand, two hundred eighty-two".