31328560280 has 32 divisors (see below), whose sum is σ = 71454873600. Its totient is φ = 12359759616.

The previous prime is 31328560271. The next prime is 31328560297. The reversal of 31328560280 is 8206582313.

It is a congruent number.

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, 5361560 + ... + 5367399.

It is an arithmetic number, because the mean of its divisors is an integer number (2232964800).

Almost surely, 2^31328560280 is an apocalyptic number.

It is an amenable number.

31328560280 is an abundant number, since it is smaller than the sum of its proper divisors (40126313320).

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

31328560280 is a wasteful number, since it uses less digits than its factorization.

31328560280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10729043 (or 10729039 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 31328560280 in words is "thirty-one billion, three hundred twenty-eight million, five hundred sixty thousand, two hundred eighty".