16871631 has 12 divisors (see below), whose sum is σ = 26168472. Its totient is φ = 9640848.

The previous prime is 16871629. The next prime is 16871663. The reversal of 16871631 is 13617861.

It is not a de Polignac number, because 16871631 - 2¹ = 16871629 is a prime.

It is a super-2 number, since 2×16871631² = 569303865200322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 16871592 and 16871601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16871431) 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 11 ways as a sum of consecutive naturals, for example, 57240 + ... + 57533.

It is an arithmetic number, because the mean of its divisors is an integer number (2180706).

Almost surely, 2^16871631 is an apocalyptic number.

16871631 is a deficient number, since it is larger than the sum of its proper divisors (9296841).

16871631 is a wasteful number, since it uses less digits than its factorization.

16871631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114790 (or 114783 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 16871631 is about 4107.5090991987. The cubic root of 16871631 is about 256.4793215055.

The spelling of 16871631 in words is "sixteen million, eight hundred seventy-one thousand, six hundred thirty-one".