315135420205 has 16 divisors (see below), whose sum is σ = 382105543680. Its totient is φ = 249480248832.

The previous prime is 315135420179. The next prime is 315135420209. The reversal of 315135420205 is 502024531513.

It is a cyclic number.

It is not a de Polignac number, because 315135420205 - 2²¹ = 315133323053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315135420209) 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, 4762336 + ... + 4828054.

It is an arithmetic number, because the mean of its divisors is an integer number (23881596480).

Almost surely, 2^315135420205 is an apocalyptic number.

It is an amenable number.

315135420205 is a deficient number, since it is larger than the sum of its proper divisors (66970123475).

315135420205 is an equidigital number, since it uses as much as digits as its factorization.

315135420205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75708.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 315135420205 its reverse (502024531513), we get a palindrome (817159951718).

The spelling of 315135420205 in words is "three hundred fifteen billion, one hundred thirty-five million, four hundred twenty thousand, two hundred five".