136312320 has 80 divisors (see below), whose sum is σ = 435798000. Its totient is φ = 36347904.

The previous prime is 136312303. The next prime is 136312333. The reversal of 136312320 is 23213631.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1195 + ... + 16554.

It is an arithmetic number, because the mean of its divisors is an integer number (5447475).

Almost surely, 2^136312320 is an apocalyptic number.

136312320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136312320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217899000).

136312320 is an abundant number, since it is smaller than the sum of its proper divisors (299485680).

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

136312320 is an equidigital number, since it uses as much as digits as its factorization.

136312320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17775 (or 17759 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 136312320 is about 11675.2867202480. The cubic root of 136312320 is about 514.6496753438.

Adding to 136312320 its reverse (23213631), we get a palindrome (159525951).

It can be divided in two parts, 13631 and 2320, that added together give a palindrome (15951).

The spelling of 136312320 in words is "one hundred thirty-six million, three hundred twelve thousand, three hundred twenty".