140206223 has 2 divisors, whose sum is σ = 140206224. Its totient is φ = 140206222.

The previous prime is 140206207. The next prime is 140206267. The reversal of 140206223 is 322602041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140206223 - 2⁴ = 140206207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140206195 and 140206204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140205223) 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 as a sum of consecutive naturals, namely, 70103111 + 70103112.

It is an arithmetic number, because the mean of its divisors is an integer number (70103112).

Almost surely, 2^140206223 is an apocalyptic number.

140206223 is a deficient number, since it is larger than the sum of its proper divisors (1).

140206223 is an equidigital number, since it uses as much as digits as its factorization.

140206223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 140206223 is about 11840.8708716885. The cubic root of 140206223 is about 519.5042402720.

Adding to 140206223 its reverse (322602041), we get a palindrome (462808264).

The spelling of 140206223 in words is "one hundred forty million, two hundred six thousand, two hundred twenty-three".