315143321005 has 8 divisors (see below), whose sum is σ = 378175024152. Its totient is φ = 252112630848.

The previous prime is 315143320997. The next prime is 315143321033. The reversal of 315143321005 is 500123341513.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 94591923364 + 220551397641 = 307558^2 + 469629^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 315143321005 - 2³ = 315143320997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 956827 + ... + 1243303.

It is an arithmetic number, because the mean of its divisors is an integer number (47271878019).

Almost surely, 2^315143321005 is an apocalyptic number.

It is an amenable number.

315143321005 is a deficient number, since it is larger than the sum of its proper divisors (63031703147).

315143321005 is a wasteful number, since it uses less digits than its factorization.

315143321005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506495.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 315143321005 its reverse (500123341513), we get a palindrome (815266662518).

The spelling of 315143321005 in words is "three hundred fifteen billion, one hundred forty-three million, three hundred twenty-one thousand, five".