31628421824 has 28 divisors (see below), whose sum is σ = 63044124864. Its totient is φ = 15743288064.

The previous prime is 31628421787. The next prime is 31628421829. The reversal of 31628421824 is 42812482613.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31628421829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1093787 + ... + 1122330.

It is an arithmetic number, because the mean of its divisors is an integer number (2251575888).

Almost surely, 2^31628421824 is an apocalyptic number.

It is an amenable number.

31628421824 is a deficient number, since it is larger than the sum of its proper divisors (31415703040).

31628421824 is a wasteful number, since it uses less digits than its factorization.

31628421824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216352 (or 2216342 counting only the distinct ones).

The product of its digits is 147456, while the sum is 41.

The spelling of 31628421824 in words is "thirty-one billion, six hundred twenty-eight million, four hundred twenty-one thousand, eight hundred twenty-four".