31285488018 has 16 divisors (see below), whose sum is σ = 62581137696. Its totient is φ = 10426802400.

The previous prime is 31285488001. The next prime is 31285488029. The reversal of 31285488018 is 81088458213.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383083 + ... + 457518.

It is an arithmetic number, because the mean of its divisors is an integer number (3911321106).

Almost surely, 2^31285488018 is an apocalyptic number.

31285488018 is an abundant number, since it is smaller than the sum of its proper divisors (31295649678).

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

31285488018 is a wasteful number, since it uses less digits than its factorization.

31285488018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846809.

The product of its (nonzero) digits is 491520, while the sum is 48.

The spelling of 31285488018 in words is "thirty-one billion, two hundred eighty-five million, four hundred eighty-eight thousand, eighteen".