206311141 has 4 divisors (see below), whose sum is σ = 209808000. Its totient is φ = 202814284.

The previous prime is 206311121. The next prime is 206311159. The reversal of 206311141 is 141113602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 206311141 - 2⁵ = 206311109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206311111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1748341 + ... + 1748458.

It is an arithmetic number, because the mean of its divisors is an integer number (52452000).

Almost surely, 2^206311141 is an apocalyptic number.

It is an amenable number.

206311141 is a deficient number, since it is larger than the sum of its proper divisors (3496859).

206311141 is an equidigital number, since it uses as much as digits as its factorization.

206311141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3496858.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 206311141 is about 14363.5351150056. The cubic root of 206311141 is about 590.8912518703.

Adding to 206311141 its reverse (141113602), we get a palindrome (347424743).

The spelling of 206311141 in words is "two hundred six million, three hundred eleven thousand, one hundred forty-one".