136940263 has 2 divisors, whose sum is σ = 136940264. Its totient is φ = 136940262.

The previous prime is 136940261. The next prime is 136940269. The reversal of 136940263 is 362049631.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136940263 - 2¹ = 136940261 is a prime.

Together with 136940261, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136940261) 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, 68470131 + 68470132.

It is an arithmetic number, because the mean of its divisors is an integer number (68470132).

Almost surely, 2^136940263 is an apocalyptic number.

136940263 is a deficient number, since it is larger than the sum of its proper divisors (1).

136940263 is an equidigital number, since it uses as much as digits as its factorization.

136940263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 136940263 is about 11702.1477943154. The cubic root of 136940263 is about 515.4387350625.

Adding to 136940263 its reverse (362049631), we get a palindrome (498989894).

The spelling of 136940263 in words is "one hundred thirty-six million, nine hundred forty thousand, two hundred sixty-three".