318531845741 has 4 divisors (see below), whose sum is σ = 318565955484. Its totient is φ = 318497736000.

The previous prime is 318531845707. The next prime is 318531845743. The reversal of 318531845741 is 147548135813.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 33765532516 + 284766313225 = 183754^2 + 533635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318531845741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 318531845741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318531845743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17040860 + ... + 17059541.

It is an arithmetic number, because the mean of its divisors is an integer number (79641488871).

Almost surely, 2^318531845741 is an apocalyptic number.

It is an amenable number.

318531845741 is a deficient number, since it is larger than the sum of its proper divisors (34109743).

318531845741 is an equidigital number, since it uses as much as digits as its factorization.

318531845741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34109742.

The product of its digits is 1612800, while the sum is 50.

The spelling of 318531845741 in words is "three hundred eighteen billion, five hundred thirty-one million, eight hundred forty-five thousand, seven hundred forty-one".