1311153215 has 32 divisors (see below), whose sum is σ = 1668321792. Its totient is φ = 987840000.

The previous prime is 1311153161. The next prime is 1311153293. The reversal of 1311153215 is 5123511131.

It is not a de Polignac number, because 1311153215 - 2¹⁴ = 1311136831 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 954269 + ... + 955641.

It is an arithmetic number, because the mean of its divisors is an integer number (52135056).

Almost surely, 2^1311153215 is an apocalyptic number.

1311153215 is a deficient number, since it is larger than the sum of its proper divisors (357168577).

1311153215 is a wasteful number, since it uses less digits than its factorization.

1311153215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571.

The product of its digits is 450, while the sum is 23.

The square root of 1311153215 is about 36209.8496959046. The cubic root of 1311153215 is about 1094.5051634301.

Adding to 1311153215 its reverse (5123511131), we get a palindrome (6434664346).

The spelling of 1311153215 in words is "one billion, three hundred eleven million, one hundred fifty-three thousand, two hundred fifteen".