136508353 has 4 divisors (see below), whose sum is σ = 137784240. Its totient is φ = 135232468.

The previous prime is 136508347. The next prime is 136508371. The reversal of 136508353 is 353805631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136508353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136508153) 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, 637783 + ... + 637996.

It is an arithmetic number, because the mean of its divisors is an integer number (34446060).

Almost surely, 2^136508353 is an apocalyptic number.

It is an amenable number.

136508353 is a deficient number, since it is larger than the sum of its proper divisors (1275887).

136508353 is a wasteful number, since it uses less digits than its factorization.

136508353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275886.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 136508353 is about 11683.6789154786. The cubic root of 136508353 is about 514.8962659072.

The spelling of 136508353 in words is "one hundred thirty-six million, five hundred eight thousand, three hundred fifty-three".