136813233 has 4 divisors (see below), whose sum is σ = 182417648. Its totient is φ = 91208820.

The previous prime is 136813231. The next prime is 136813241. The reversal of 136813233 is 332318631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 332318631 = 3 ⋅110772877.

It is not a de Polignac number, because 136813233 - 2¹ = 136813231 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136813233.

It is not an unprimeable number, because it can be changed into a prime (136813231) 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 in 3 ways as a sum of consecutive naturals, for example, 22802203 + ... + 22802208.

It is an arithmetic number, because the mean of its divisors is an integer number (45604412).

Almost surely, 2^136813233 is an apocalyptic number.

It is an amenable number.

136813233 is a deficient number, since it is larger than the sum of its proper divisors (45604415).

136813233 is an equidigital number, since it uses as much as digits as its factorization.

136813233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45604414.

The product of its digits is 7776, while the sum is 30.

The square root of 136813233 is about 11696.7188989049. The cubic root of 136813233 is about 515.2793068140.

The spelling of 136813233 in words is "one hundred thirty-six million, eight hundred thirteen thousand, two hundred thirty-three".