135623273 has 16 divisors (see below), whose sum is σ = 145656000. Its totient is φ = 125908992.

The previous prime is 135623239. The next prime is 135623281. The reversal of 135623273 is 372326531.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135623273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135623573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234761 + ... + 235337.

It is an arithmetic number, because the mean of its divisors is an integer number (9103500).

Almost surely, 2^135623273 is an apocalyptic number.

It is an amenable number.

135623273 is a deficient number, since it is larger than the sum of its proper divisors (10032727).

135623273 is a wasteful number, since it uses less digits than its factorization.

135623273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824.

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

The square root of 135623273 is about 11645.7405518069. The cubic root of 135623273 is about 513.7810401896.

The spelling of 135623273 in words is "one hundred thirty-five million, six hundred twenty-three thousand, two hundred seventy-three".