31628464663 has 4 divisors (see below), whose sum is σ = 31639014000. Its totient is φ = 31617915328.

The previous prime is 31628464613. The next prime is 31628464667. The reversal of 31628464663 is 36646482613.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31628464663 - 2³³ = 23038530071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31628464667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5270170 + ... + 5276167.

It is an arithmetic number, because the mean of its divisors is an integer number (7909753500).

Almost surely, 2^31628464663 is an apocalyptic number.

31628464663 is a deficient number, since it is larger than the sum of its proper divisors (10549337).

31628464663 is a wasteful number, since it uses less digits than its factorization.

31628464663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10549336.

The product of its digits is 2985984, while the sum is 49.

The spelling of 31628464663 in words is "thirty-one billion, six hundred twenty-eight million, four hundred sixty-four thousand, six hundred sixty-three".