206266131 has 12 divisors (see below), whose sum is σ = 300085240. Its totient is φ = 136520640.

The previous prime is 206266103. The next prime is 206266153. The reversal of 206266131 is 131662602.

206266131 is a `hidden beast` number, since 2 + 0 + 626 + 6 + 1 + 31 = 666.

It is not a de Polignac number, because 206266131 - 2¹¹ = 206264083 is a prime.

It is a super-2 number, since 2×206266131² = 85091433595418322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206266095 and 206266104.

It is not an unprimeable number, because it can be changed into a prime (206266171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81190 + ... + 83691.

Almost surely, 2^206266131 is an apocalyptic number.

206266131 is a deficient number, since it is larger than the sum of its proper divisors (93819109).

206266131 is a wasteful number, since it uses less digits than its factorization.

206266131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165026 (or 165023 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 206266131 is about 14361.9682146982. The cubic root of 206266131 is about 590.8482780243.

The spelling of 206266131 in words is "two hundred six million, two hundred sixty-six thousand, one hundred thirty-one".