206113541 has 2 divisors, whose sum is σ = 206113542. Its totient is φ = 206113540.

The previous prime is 206113499. The next prime is 206113543. The reversal of 206113541 is 145311602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137968516 + 68145025 = 11746^2 + 8255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206113541 is a prime.

Together with 206113543, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206113543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103056770 + 103056771.

It is an arithmetic number, because the mean of its divisors is an integer number (103056771).

Almost surely, 2^206113541 is an apocalyptic number.

It is an amenable number.

206113541 is a deficient number, since it is larger than the sum of its proper divisors (1).

206113541 is an equidigital number, since it uses as much as digits as its factorization.

206113541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 206113541 is about 14356.6549376935. The cubic root of 206113541 is about 590.7025443234.

The spelling of 206113541 in words is "two hundred six million, one hundred thirteen thousand, five hundred forty-one".