31518134448 has 80 divisors (see below), whose sum is σ = 82020750336. Its totient is φ = 10428943360.

The previous prime is 31518134443. The next prime is 31518134503. The reversal of 31518134448 is 84443181513.

It is not an unprimeable number, because it can be changed into a prime (31518134443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7059865 + ... + 7064327.

Almost surely, 2^31518134448 is an apocalyptic number.

It is an amenable number.

31518134448 is an abundant number, since it is smaller than the sum of its proper divisors (50502615888).

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

31518134448 is a wasteful number, since it uses less digits than its factorization.

31518134448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5522 (or 5516 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The spelling of 31518134448 in words is "thirty-one billion, five hundred eighteen million, one hundred thirty-four thousand, four hundred forty-eight".