17139131 has 4 divisors (see below), whose sum is σ = 17155032. Its totient is φ = 17123232.

The previous prime is 17139127. The next prime is 17139137. The reversal of 17139131 is 13193171.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 17139131 - 2² = 17139127 is a prime.

It is a super-2 number, since 2×17139131² = 587499622870322, 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 17139131.

It is not an unprimeable number, because it can be changed into a prime (17139137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6206 + ... + 8531.

It is an arithmetic number, because the mean of its divisors is an integer number (4288758).

Almost surely, 2^17139131 is an apocalyptic number.

17139131 is a deficient number, since it is larger than the sum of its proper divisors (15901).

17139131 is a wasteful number, since it uses less digits than its factorization.

17139131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15900.

The product of its digits is 567, while the sum is 26.

The square root of 17139131 is about 4139.9433571004. The cubic root of 17139131 is about 257.8277148364.

The spelling of 17139131 in words is "seventeen million, one hundred thirty-nine thousand, one hundred thirty-one".