136303913 has 4 divisors (see below), whose sum is σ = 136434900. Its totient is φ = 136172928.

The previous prime is 136303889. The next prime is 136303919. The reversal of 136303913 is 319303631.

136303913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89340304 + 46963609 = 9452^2 + 6853^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136303913 is a prime.

It is a super-2 number, since 2×136303913² = 37157513398223138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136303919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63920 + ... + 66017.

It is an arithmetic number, because the mean of its divisors is an integer number (34108725).

Almost surely, 2^136303913 is an apocalyptic number.

It is an amenable number.

136303913 is a deficient number, since it is larger than the sum of its proper divisors (130987).

136303913 is a wasteful number, since it uses less digits than its factorization.

136303913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130986.

The product of its (nonzero) digits is 4374, while the sum is 29.

The square root of 136303913 is about 11674.9266807120. The cubic root of 136303913 is about 514.6390948652.

The spelling of 136303913 in words is "one hundred thirty-six million, three hundred three thousand, nine hundred thirteen".