11531315 has 8 divisors (see below), whose sum is σ = 13918608. Its totient is φ = 9171040.

The previous prime is 11531269. The next prime is 11531339. The reversal of 11531315 is 51313511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11531315 - 2⁶ = 11531251 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5801 + ... + 7530.

It is an arithmetic number, because the mean of its divisors is an integer number (1739826).

Almost surely, 2^11531315 is an apocalyptic number.

11531315 is a deficient number, since it is larger than the sum of its proper divisors (2387293).

11531315 is a wasteful number, since it uses less digits than its factorization.

11531315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13509.

The product of its digits is 225, while the sum is 20.

The square root of 11531315 is about 3395.7789975203. The cubic root of 11531315 is about 225.9225659485.

Adding to 11531315 its reverse (51313511), we get a palindrome (62844826).

The spelling of 11531315 in words is "eleven million, five hundred thirty-one thousand, three hundred fifteen".