134640263 has 2 divisors, whose sum is σ = 134640264. Its totient is φ = 134640262.

The previous prime is 134640197. The next prime is 134640271. The reversal of 134640263 is 362046431.

It is a strong prime.

It is an emirp because it is prime and its reverse (362046431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134640263 - 2²⁰ = 133591687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134640563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67320131 + 67320132.

It is an arithmetic number, because the mean of its divisors is an integer number (67320132).

Almost surely, 2^134640263 is an apocalyptic number.

134640263 is a deficient number, since it is larger than the sum of its proper divisors (1).

134640263 is an equidigital number, since it uses as much as digits as its factorization.

134640263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 134640263 is about 11603.4590963212. The cubic root of 134640263 is about 512.5367182100.

Adding to 134640263 its reverse (362046431), we get a palindrome (496686694).

It can be divided in two parts, 134640 and 263, that multiplied together give a triangular number (35410320 = T₈₄₁₅).

The spelling of 134640263 in words is "one hundred thirty-four million, six hundred forty thousand, two hundred sixty-three".