1315523155 has 16 divisors (see below), whose sum is σ = 1672544160. Its totient is φ = 989885952.

The previous prime is 1315523147. The next prime is 1315523213. The reversal of 1315523155 is 5513255131.

It is a cyclic number.

It is not a de Polignac number, because 1315523155 - 2³ = 1315523147 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165001 + ... + 172789.

It is an arithmetic number, because the mean of its divisors is an integer number (104534010).

Almost surely, 2^1315523155 is an apocalyptic number.

1315523155 is a deficient number, since it is larger than the sum of its proper divisors (357021005).

1315523155 is a wasteful number, since it uses less digits than its factorization.

1315523155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9798.

The product of its digits is 11250, while the sum is 31.

The square root of 1315523155 is about 36270.1413700030. The cubic root of 1315523155 is about 1095.7197730813.

Adding to 1315523155 its reverse (5513255131), we get a palindrome (6828778286).

The spelling of 1315523155 in words is "one billion, three hundred fifteen million, five hundred twenty-three thousand, one hundred fifty-five".