136224823 has 4 divisors (see below), whose sum is σ = 155685520. Its totient is φ = 116764128.

The previous prime is 136224811. The next prime is 136224839. The reversal of 136224823 is 328422631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136224823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136224863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9730338 + ... + 9730351.

It is an arithmetic number, because the mean of its divisors is an integer number (38921380).

Almost surely, 2^136224823 is an apocalyptic number.

136224823 is a deficient number, since it is larger than the sum of its proper divisors (19460697).

136224823 is an equidigital number, since it uses as much as digits as its factorization.

136224823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19460696.

The product of its digits is 13824, while the sum is 31.

The square root of 136224823 is about 11671.5390159139. The cubic root of 136224823 is about 514.5395362631.

The spelling of 136224823 in words is "one hundred thirty-six million, two hundred twenty-four thousand, eight hundred twenty-three".