315540012013 has 4 divisors (see below), whose sum is σ = 315575502748. Its totient is φ = 315504521280.

The previous prime is 315540011989. The next prime is 315540012097. The reversal of 315540012013 is 310210045513.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310210045513 = 206273 ⋅1503881.

It can be written as a sum of positive squares in 2 ways, for example, as 28075683364 + 287464328649 = 167558^2 + 536157^2 .

It is a cyclic number.

It is not a de Polignac number, because 315540012013 - 2⁵ = 315540011981 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 (315540012313) 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, 17732028 + ... + 17749813.

It is an arithmetic number, because the mean of its divisors is an integer number (78893875687).

Almost surely, 2^315540012013 is an apocalyptic number.

It is an amenable number.

315540012013 is a deficient number, since it is larger than the sum of its proper divisors (35490735).

315540012013 is an equidigital number, since it uses as much as digits as its factorization.

315540012013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35490734.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 315540012013 its reverse (310210045513), we get a palindrome (625750057526).

The spelling of 315540012013 in words is "three hundred fifteen billion, five hundred forty million, twelve thousand, thirteen".