136523743 has 2 divisors, whose sum is σ = 136523744. Its totient is φ = 136523742.

The previous prime is 136523741. The next prime is 136523773. The reversal of 136523743 is 347325631.

It is a weak prime.

It is an emirp because it is prime and its reverse (347325631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136523743 - 2¹ = 136523741 is a prime.

Together with 136523741, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 136523699 and 136523708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136523741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68261871 + 68261872.

It is an arithmetic number, because the mean of its divisors is an integer number (68261872).

Almost surely, 2^136523743 is an apocalyptic number.

136523743 is a deficient number, since it is larger than the sum of its proper divisors (1).

136523743 is an equidigital number, since it uses as much as digits as its factorization.

136523743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 34.

The square root of 136523743 is about 11684.3375079634. The cubic root of 136523743 is about 514.9156150425.

The spelling of 136523743 in words is "one hundred thirty-six million, five hundred twenty-three thousand, seven hundred forty-three".