206131506 has 32 divisors (see below), whose sum is σ = 475832448. Its totient is φ = 58310400.

The previous prime is 206131483. The next prime is 206131529. The reversal of 206131506 is 605131602.

206131506 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (206131483) and next prime (206131529).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 20055 + ... + 28538.

It is an arithmetic number, because the mean of its divisors is an integer number (14869764).

Almost surely, 2^206131506 is an apocalyptic number.

206131506 is an abundant number, since it is smaller than the sum of its proper divisors (269700942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206131506 is a wasteful number, since it uses less digits than its factorization.

206131506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48706.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 206131506 is about 14357.2805920899. The cubic root of 206131506 is about 590.7197058401.

The spelling of 206131506 in words is "two hundred six million, one hundred thirty-one thousand, five hundred six".