16994131 has 24 divisors (see below), whose sum is σ = 22120560. Its totient is φ = 12902400.

The previous prime is 16994123. The next prime is 16994141. The reversal of 16994131 is 13149961.

It is a happy number.

It is not a de Polignac number, because 16994131 - 2³ = 16994123 is a prime.

It is a super-2 number, since 2×16994131² = 577600976890322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16994111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21715 + ... + 22483.

It is an arithmetic number, because the mean of its divisors is an integer number (921690).

Almost surely, 2^16994131 is an apocalyptic number.

16994131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16994131 is a deficient number, since it is larger than the sum of its proper divisors (5126429).

16994131 is a wasteful number, since it uses less digits than its factorization.

16994131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835 (or 828 counting only the distinct ones).

The product of its digits is 5832, while the sum is 34.

The square root of 16994131 is about 4122.3938433876. The cubic root of 16994131 is about 257.0985657548.

The spelling of 16994131 in words is "sixteen million, nine hundred ninety-four thousand, one hundred thirty-one".