136920263 has 2 divisors, whose sum is σ = 136920264. Its totient is φ = 136920262.

The previous prime is 136920233. The next prime is 136920323. The reversal of 136920263 is 362029631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136920263 - 2²² = 132725959 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136920233) 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, 68460131 + 68460132.

It is an arithmetic number, because the mean of its divisors is an integer number (68460132).

Almost surely, 2^136920263 is an apocalyptic number.

136920263 is a deficient number, since it is larger than the sum of its proper divisors (1).

136920263 is an equidigital number, since it uses as much as digits as its factorization.

136920263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 136920263 is about 11701.2932191275. The cubic root of 136920263 is about 515.4136407224.

Adding to 136920263 its reverse (362029631), we get a palindrome (498949894).

The spelling of 136920263 in words is "one hundred thirty-six million, nine hundred twenty thousand, two hundred sixty-three".