315030305155 has 4 divisors (see below), whose sum is σ = 378036366192. Its totient is φ = 252024244120.

The previous prime is 315030305153. The next prime is 315030305167. The reversal of 315030305155 is 551503030513.

It is a happy number.

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

It is not a de Polignac number, because 315030305155 - 2¹ = 315030305153 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315030305153) 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, 31503030511 + ... + 31503030520.

It is an arithmetic number, because the mean of its divisors is an integer number (94509091548).

Almost surely, 2^315030305155 is an apocalyptic number.

315030305155 is a deficient number, since it is larger than the sum of its proper divisors (63006061037).

315030305155 is an equidigital number, since it uses as much as digits as its factorization.

315030305155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63006061036.

The product of its (nonzero) digits is 16875, while the sum is 31.

Adding to 315030305155 its reverse (551503030513), we get a palindrome (866533335668).

The spelling of 315030305155 in words is "three hundred fifteen billion, thirty million, three hundred five thousand, one hundred fifty-five".