31128350660 has 24 divisors (see below), whose sum is σ = 71312222016. Its totient is φ = 11319400160.

The previous prime is 31128350657. The next prime is 31128350689. The reversal of 31128350660 is 6605382113.

It is a self number, because there is not a number n which added to its sum of digits gives 31128350660.

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, 70746032 + ... + 70746471.

It is an arithmetic number, because the mean of its divisors is an integer number (2971342584).

Almost surely, 2^31128350660 is an apocalyptic number.

It is an amenable number.

31128350660 is an abundant number, since it is smaller than the sum of its proper divisors (40183871356).

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

31128350660 is a wasteful number, since it uses less digits than its factorization.

31128350660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141492523 (or 141492521 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 31128350660 in words is "thirty-one billion, one hundred twenty-eight million, three hundred fifty thousand, six hundred sixty".