136323243 has 54 divisors (see below), whose sum is σ = 239784636. Its totient is φ = 77170968.

The previous prime is 136323241. The next prime is 136323259. The reversal of 136323243 is 342323631.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

136323243 is a `hidden beast` number, since 1 + 3 + 632 + 3 + 24 + 3 = 666.

It is not a de Polignac number, because 136323243 - 2¹ = 136323241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (7776) is a multiple of the sum of its prime factors (243).

It is not an unprimeable number, because it can be changed into a prime (136323241) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 1273996 + ... + 1274102.

Almost surely, 2^136323243 is an apocalyptic number.

136323243 is a deficient number, since it is larger than the sum of its proper divisors (103461393).

136323243 is an frugal number, since it uses more digits than its factorization.

136323243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 117 counting only the distinct ones).

The product of its digits is 7776, while the sum is 27.

The square root of 136323243 is about 11675.7544938218. The cubic root of 136323243 is about 514.6634216393.

Multiplying 136323243 by its sum of digits (27), we get a square (3680727561 = 60669²).

136323243 divided by its sum of digits (27) gives a square (5049009 = 2247²).

Adding to 136323243 its reverse (342323631), we get a palindrome (478646874).

The spelling of 136323243 in words is "one hundred thirty-six million, three hundred twenty-three thousand, two hundred forty-three".