206931016 has 8 divisors (see below), whose sum is σ = 387995670. Its totient is φ = 103465504.

The previous prime is 206930951. The next prime is 206931019. The reversal of 206931016 is 610139602.

It can be written as a sum of positive squares in only one way, i.e., 109118916 + 97812100 = 10446^2 + 9890^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (206931019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12933181 + ... + 12933196.

Almost surely, 2^206931016 is an apocalyptic number.

It is an amenable number.

206931016 is a deficient number, since it is larger than the sum of its proper divisors (181064654).

206931016 is a wasteful number, since it uses less digits than its factorization.

206931016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25866383 (or 25866379 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 206931016 is about 14385.0970104480. The cubic root of 206931016 is about 591.4824503358.

The spelling of 206931016 in words is "two hundred six million, nine hundred thirty-one thousand, sixteen".