13231115 has 8 divisors (see below), whose sum is σ = 15960768. Its totient is φ = 10529280.

The previous prime is 13231103. The next prime is 13231123. The reversal of 13231115 is 51113231.

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

It is a de Polignac number, because none of the positive numbers 2^k-13231115 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13231093 and 13231102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5891 + ... + 7820.

It is an arithmetic number, because the mean of its divisors is an integer number (1995096).

Almost surely, 2^13231115 is an apocalyptic number.

13231115 is a deficient number, since it is larger than the sum of its proper divisors (2729653).

13231115 is a wasteful number, since it uses less digits than its factorization.

13231115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13909.

The product of its digits is 90, while the sum is 17.

The square root of 13231115 is about 3637.4599654154. The cubic root of 13231115 is about 236.5186989731.

Adding to 13231115 its reverse (51113231), we get a palindrome (64344346).

The spelling of 13231115 in words is "thirteen million, two hundred thirty-one thousand, one hundred fifteen".