136440312 has 32 divisors (see below), whose sum is σ = 350322000. Its totient is φ = 44250624.

The previous prime is 136440281. The next prime is 136440313. The reversal of 136440312 is 213044631.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136440313) 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 7 ways as a sum of consecutive naturals, for example, 75937 + ... + 77712.

Almost surely, 2^136440312 is an apocalyptic number.

136440312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

136440312 is an abundant number, since it is smaller than the sum of its proper divisors (213881688).

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

136440312 is a wasteful number, since it uses less digits than its factorization.

136440312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153695 (or 153691 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 136440312 is about 11680.7667556544. The cubic root of 136440312 is about 514.8107036725.

Adding to 136440312 its reverse (213044631), we get a palindrome (349484943).

The spelling of 136440312 in words is "one hundred thirty-six million, four hundred forty thousand, three hundred twelve".