318646121135 has 16 divisors (see below), whose sum is σ = 390629606400. Its totient is φ = 249417351456.

The previous prime is 318646121113. The next prime is 318646121141. The reversal of 318646121135 is 531121646813.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318646121135 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 318646121092 and 318646121101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 575696 + ... + 984234.

It is an arithmetic number, because the mean of its divisors is an integer number (24414350400).

Almost surely, 2^318646121135 is an apocalyptic number.

318646121135 is a deficient number, since it is larger than the sum of its proper divisors (71983485265).

318646121135 is a wasteful number, since it uses less digits than its factorization.

318646121135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411910.

The product of its digits is 103680, while the sum is 41.

Adding to 318646121135 its reverse (531121646813), we get a palindrome (849767767948).

The spelling of 318646121135 in words is "three hundred eighteen billion, six hundred forty-six million, one hundred twenty-one thousand, one hundred thirty-five".