206240239903 has 2 divisors, whose sum is σ = 206240239904. Its totient is φ = 206240239902.

The previous prime is 206240239897. The next prime is 206240240009. The reversal of 206240239903 is 309932042602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206240239903 - 2⁵ = 206240239871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206240234903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103120119951 + 103120119952.

It is an arithmetic number, because the mean of its divisors is an integer number (103120119952).

Almost surely, 2^206240239903 is an apocalyptic number.

206240239903 is a deficient number, since it is larger than the sum of its proper divisors (1).

206240239903 is an equidigital number, since it uses as much as digits as its factorization.

206240239903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 40.

The spelling of 206240239903 in words is "two hundred six billion, two hundred forty million, two hundred thirty-nine thousand, nine hundred three".