318130600661 has 4 divisors (see below), whose sum is σ = 323522644800. Its totient is φ = 312738556524.

The previous prime is 318130600621. The next prime is 318130600693. The reversal of 318130600661 is 166006031813.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318130600661 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 (318130600621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2696021981 + ... + 2696022098.

It is an arithmetic number, because the mean of its divisors is an integer number (80880661200).

Almost surely, 2^318130600661 is an apocalyptic number.

It is an amenable number.

318130600661 is a deficient number, since it is larger than the sum of its proper divisors (5392044139).

318130600661 is an equidigital number, since it uses as much as digits as its factorization.

318130600661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5392044138.

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 318130600661 in words is "three hundred eighteen billion, one hundred thirty million, six hundred thousand, six hundred sixty-one".