206113157 has 2 divisors, whose sum is σ = 206113158. Its totient is φ = 206113156.

The previous prime is 206113123. The next prime is 206113163. The reversal of 206113157 is 751311602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200477281 + 5635876 = 14159^2 + 2374^2 .

It is a cyclic number.

It is not a de Polignac number, because 206113157 - 2⁶ = 206113093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206113357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103056578 + 103056579.

It is an arithmetic number, because the mean of its divisors is an integer number (103056579).

Almost surely, 2^206113157 is an apocalyptic number.

It is an amenable number.

206113157 is a deficient number, since it is larger than the sum of its proper divisors (1).

206113157 is an equidigital number, since it uses as much as digits as its factorization.

206113157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 206113157 is about 14356.6415640985. The cubic root of 206113157 is about 590.7021774869.

Adding to 206113157 its reverse (751311602), we get a palindrome (957424759).

The spelling of 206113157 in words is "two hundred six million, one hundred thirteen thousand, one hundred fifty-seven".