15131009 has 8 divisors (see below), whose sum is σ = 15654912. Its totient is φ = 14614560.

The previous prime is 15130967. The next prime is 15131027. The reversal of 15131009 is 90013151.

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

It is a cyclic number.

It is not a de Polignac number, because 15131009 - 2¹² = 15126913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15131029) by changing a digit.

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, 2432 + ... + 6014.

It is an arithmetic number, because the mean of its divisors is an integer number (1956864).

Almost surely, 2^15131009 is an apocalyptic number.

It is an amenable number.

15131009 is a deficient number, since it is larger than the sum of its proper divisors (523903).

15131009 is a wasteful number, since it uses less digits than its factorization.

15131009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3727.

The product of its (nonzero) digits is 135, while the sum is 20.

The square root of 15131009 is about 3889.8597661098. The cubic root of 15131009 is about 247.3371182829.

The spelling of 15131009 in words is "fifteen million, one hundred thirty-one thousand, nine".