13087331 has 8 divisors (see below), whose sum is σ = 13892544. Its totient is φ = 12286080.

The previous prime is 13087313. The next prime is 13087339. The reversal of 13087331 is 13378031.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13087331 is a prime.

It is a super-2 number, since 2×13087331² = 342556465407122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13087331.

It is not an unprimeable number, because it can be changed into a prime (13087339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8486 + ... + 9908.

It is an arithmetic number, because the mean of its divisors is an integer number (1736568).

Almost surely, 2^13087331 is an apocalyptic number.

13087331 is a deficient number, since it is larger than the sum of its proper divisors (805213).

13087331 is a wasteful number, since it uses less digits than its factorization.

13087331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1981.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 13087331 is about 3617.6416350988. The cubic root of 13087331 is about 235.6588182574.

The spelling of 13087331 in words is "thirteen million, eighty-seven thousand, three hundred thirty-one".