136323138 has 64 divisors (see below), whose sum is σ = 330624000. Its totient is φ = 36604224.

The previous prime is 136323137. The next prime is 136323167. The reversal of 136323138 is 831323631.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (136323137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110308 + ... + 111536.

It is an arithmetic number, because the mean of its divisors is an integer number (5166000).

Almost surely, 2^136323138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136323138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165312000).

136323138 is an abundant number, since it is smaller than the sum of its proper divisors (194300862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136323138 is a wasteful number, since it uses less digits than its factorization.

136323138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399.

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

The square root of 136323138 is about 11675.7499973235. The cubic root of 136323138 is about 514.6632895031.

Adding to 136323138 its reverse (831323631), we get a palindrome (967646769).

The spelling of 136323138 in words is "one hundred thirty-six million, three hundred twenty-three thousand, one hundred thirty-eight".