135623723 has 2 divisors, whose sum is σ = 135623724. Its totient is φ = 135623722.

The previous prime is 135623711. The next prime is 135623737. The reversal of 135623723 is 327326531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135623723 - 2¹⁸ = 135361579 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135623723.

It is not a weakly prime, because it can be changed into another prime (135623753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67811861 + 67811862.

It is an arithmetic number, because the mean of its divisors is an integer number (67811862).

Almost surely, 2^135623723 is an apocalyptic number.

135623723 is a deficient number, since it is larger than the sum of its proper divisors (1).

135623723 is an equidigital number, since it uses as much as digits as its factorization.

135623723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 32.

The square root of 135623723 is about 11645.7598721595. The cubic root of 135623723 is about 513.7816084333.

The spelling of 135623723 in words is "one hundred thirty-five million, six hundred twenty-three thousand, seven hundred twenty-three".