315143320405 has 8 divisors (see below), whose sum is σ = 385307305272. Its totient is φ = 247357775808.

The previous prime is 315143320399. The next prime is 315143320441. The reversal of 315143320405 is 504023341513.

It can be written as a sum of positive squares in 4 ways, for example, as 20157468529 + 294985851876 = 141977^2 + 543126^2 .

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 315143320405 - 2⁷ = 315143320277 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, 594609774 + ... + 594610303.

It is an arithmetic number, because the mean of its divisors is an integer number (48163413159).

Almost surely, 2^315143320405 is an apocalyptic number.

It is an amenable number.

315143320405 is a deficient number, since it is larger than the sum of its proper divisors (70163984867).

315143320405 is a wasteful number, since it uses less digits than its factorization.

315143320405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189220135.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 315143320405 its reverse (504023341513), we get a palindrome (819166661918).

The spelling of 315143320405 in words is "three hundred fifteen billion, one hundred forty-three million, three hundred twenty thousand, four hundred five".