318634063221 has 32 divisors (see below), whose sum is σ = 436675650048. Its totient is φ = 206586132480.

The previous prime is 318634063219. The next prime is 318634063261. The reversal of 318634063221 is 122360436813.

It is not a de Polignac number, because 318634063221 - 2¹ = 318634063219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 318634063221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318634063261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8469765 + ... + 8507301.

It is an arithmetic number, because the mean of its divisors is an integer number (13646114064).

Almost surely, 2^318634063221 is an apocalyptic number.

It is an amenable number.

318634063221 is a deficient number, since it is larger than the sum of its proper divisors (118041586827).

318634063221 is a wasteful number, since it uses less digits than its factorization.

318634063221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38061.

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 318634063221 in words is "three hundred eighteen billion, six hundred thirty-four million, sixty-three thousand, two hundred twenty-one".