318661133023 has 16 divisors (see below), whose sum is σ = 324509328000. Its totient is φ = 312869284000.

The previous prime is 318661133003. The next prime is 318661133069. The reversal of 318661133023 is 320331166813.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318661133023 is a prime.

It is a super-2 number, since 2×318661133023² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318661133003) 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, 19825236 + ... + 19841302.

It is an arithmetic number, because the mean of its divisors is an integer number (20281833000).

Almost surely, 2^318661133023 is an apocalyptic number.

318661133023 is a deficient number, since it is larger than the sum of its proper divisors (5848194977).

318661133023 is a wasteful number, since it uses less digits than its factorization.

318661133023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17798.

The product of its (nonzero) digits is 46656, while the sum is 37.

Adding to 318661133023 its reverse (320331166813), we get a palindrome (638992299836).

The spelling of 318661133023 in words is "three hundred eighteen billion, six hundred sixty-one million, one hundred thirty-three thousand, twenty-three".