206310157 has 2 divisors, whose sum is σ = 206310158. Its totient is φ = 206310156.

The previous prime is 206310127. The next prime is 206310179. The reversal of 206310157 is 751013602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137851081 + 68459076 = 11741^2 + 8274^2 .

It is a cyclic number.

It is not a de Polignac number, because 206310157 - 2¹⁹ = 205785869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206310107) by changing a digit.

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 as a sum of consecutive naturals, namely, 103155078 + 103155079.

It is an arithmetic number, because the mean of its divisors is an integer number (103155079).

Almost surely, 2^206310157 is an apocalyptic number.

It is an amenable number.

206310157 is a deficient number, since it is larger than the sum of its proper divisors (1).

206310157 is an equidigital number, since it uses as much as digits as its factorization.

206310157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 206310157 is about 14363.5008615588. The cubic root of 206310157 is about 590.8903124511.

Adding to 206310157 its reverse (751013602), we get a palindrome (957323759).

The spelling of 206310157 in words is "two hundred six million, three hundred ten thousand, one hundred fifty-seven".