315220322155 has 16 divisors (see below), whose sum is σ = 386404245504. Its totient is φ = 246752232160.

The previous prime is 315220322143. The next prime is 315220322191. The reversal of 315220322155 is 551223022513.

It is not a de Polignac number, because 315220322155 - 2¹³ = 315220313963 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 846654 + ... + 1160716.

It is an arithmetic number, because the mean of its divisors is an integer number (24150265344).

Almost surely, 2^315220322155 is an apocalyptic number.

315220322155 is a deficient number, since it is larger than the sum of its proper divisors (71183923349).

315220322155 is a wasteful number, since it uses less digits than its factorization.

315220322155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318386.

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

Adding to 315220322155 its reverse (551223022513), we get a palindrome (866443344668).

The spelling of 315220322155 in words is "three hundred fifteen billion, two hundred twenty million, three hundred twenty-two thousand, one hundred fifty-five".