16931212 has 12 divisors (see below), whose sum is σ = 29662416. Its totient is φ = 8456240.

The previous prime is 16931209. The next prime is 16931219. The reversal of 16931212 is 21213961.

It is not an unprimeable number, because it can be changed into a prime (16931219) 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, 3162 + ... + 6622.

It is an arithmetic number, because the mean of its divisors is an integer number (2471868).

Almost surely, 2^16931212 is an apocalyptic number.

It is an amenable number.

16931212 is a deficient number, since it is larger than the sum of its proper divisors (12731204).

16931212 is a wasteful number, since it uses less digits than its factorization.

16931212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4688 (or 4686 counting only the distinct ones).

The product of its digits is 648, while the sum is 25.

The square root of 16931212 is about 4114.7553997777. The cubic root of 16931212 is about 256.7808798114.

The spelling of 16931212 in words is "sixteen million, nine hundred thirty-one thousand, two hundred twelve".