16979131 has 4 divisors (see below), whose sum is σ = 18285232. Its totient is φ = 15673032.

The previous prime is 16979119. The next prime is 16979147. The reversal of 16979131 is 13197961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13197961 = 7 ⋅1885423.

It is a cyclic number.

It is not a de Polignac number, because 16979131 - 2⁵ = 16979099 is a prime.

It is a super-3 number, since 3×16979131³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16979111) 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 3 ways as a sum of consecutive naturals, for example, 653031 + ... + 653056.

It is an arithmetic number, because the mean of its divisors is an integer number (4571308).

Almost surely, 2^16979131 is an apocalyptic number.

16979131 is a deficient number, since it is larger than the sum of its proper divisors (1306101).

16979131 is a wasteful number, since it uses less digits than its factorization.

16979131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306100.

The product of its digits is 10206, while the sum is 37.

The square root of 16979131 is about 4120.5741104851. The cubic root of 16979131 is about 257.0229001482.

The spelling of 16979131 in words is "sixteen million, nine hundred seventy-nine thousand, one hundred thirty-one".