206431506201 has 8 divisors (see below), whose sum is σ = 275252325760. Its totient is φ = 137615845392.

The previous prime is 206431506173. The next prime is 206431506271. The reversal of 206431506201 is 102605134602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 206431506201 - 2¹⁸ = 206431244057 is a prime.

It is a super-2 number, since 2×206431506201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206431506271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1195330 + ... + 1357083.

It is an arithmetic number, because the mean of its divisors is an integer number (34406540720).

Almost surely, 2^206431506201 is an apocalyptic number.

It is an amenable number.

206431506201 is a deficient number, since it is larger than the sum of its proper divisors (68820819559).

206431506201 is a wasteful number, since it uses less digits than its factorization.

206431506201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2579375.

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 206431506201 in words is "two hundred six billion, four hundred thirty-one million, five hundred six thousand, two hundred one".