206430133 has 16 divisors (see below), whose sum is σ = 269015040. Its totient is φ = 153720576.

The previous prime is 206430131. The next prime is 206430179. The reversal of 206430133 is 331034602.

It is a cyclic number.

It is not a de Polignac number, because 206430133 - 2¹ = 206430131 is a prime.

It is a super-2 number, since 2×206430133² = 85226799620795378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206430131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65173 + ... + 68266.

It is an arithmetic number, because the mean of its divisors is an integer number (16813440).

Almost surely, 2^206430133 is an apocalyptic number.

It is an amenable number.

206430133 is a deficient number, since it is larger than the sum of its proper divisors (62584907).

206430133 is a wasteful number, since it uses less digits than its factorization.

206430133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133476.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 206430133 is about 14367.6766737006. The cubic root of 206430133 is about 591.0048308369.

Adding to 206430133 its reverse (331034602), we get a palindrome (537464735).

The spelling of 206430133 in words is "two hundred six million, four hundred thirty thousand, one hundred thirty-three".