136387357 has 4 divisors (see below), whose sum is σ = 139559200. Its totient is φ = 133215516.

The previous prime is 136387337. The next prime is 136387369. The reversal of 136387357 is 753783631.

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 not a de Polignac number, because 136387357 - 2¹¹ = 136385309 is a prime.

It is a super-2 number, since 2×136387357² = 37203022298890898, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 3171799 = 136387357 / (1 + 3 + 6 + 3 + 8 + 7 + 3 + 5 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136387327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1585857 + ... + 1585942.

It is an arithmetic number, because the mean of its divisors is an integer number (34889800).

Almost surely, 2^136387357 is an apocalyptic number.

It is an amenable number.

136387357 is a deficient number, since it is larger than the sum of its proper divisors (3171843).

136387357 is an equidigital number, since it uses as much as digits as its factorization.

136387357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171842.

The product of its digits is 317520, while the sum is 43.

The square root of 136387357 is about 11678.4997752280. The cubic root of 136387357 is about 514.7440925464.

The spelling of 136387357 in words is "one hundred thirty-six million, three hundred eighty-seven thousand, three hundred fifty-seven".