136531230 has 64 divisors (see below), whose sum is σ = 366218496. Its totient is φ = 32288000.

The previous prime is 136531229. The next prime is 136531231. The reversal of 136531230 is 32135631.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (136531229) and next prime (136531231).

It is a self number, because there is not a number n which added to its sum of digits gives 136531230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136531231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8485 + ... + 18575.

It is an arithmetic number, because the mean of its divisors is an integer number (5722164).

Almost surely, 2^136531230 is an apocalyptic number.

136531230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 136531230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183109248).

136531230 is an abundant number, since it is smaller than the sum of its proper divisors (229687266).

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

136531230 is a wasteful number, since it uses less digits than its factorization.

136531230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10153.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 136531230 is about 11684.6578897287. The cubic root of 136531230 is about 514.9250275756.

Adding to 136531230 its reverse (32135631), we get a palindrome (168666861).

The spelling of 136531230 in words is "one hundred thirty-six million, five hundred thirty-one thousand, two hundred thirty".