136311243 has 8 divisors (see below), whose sum is σ = 183790800. Its totient is φ = 89852928.

The previous prime is 136311239. The next prime is 136311251. The reversal of 136311243 is 342113631.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 136311243 - 2² = 136311239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136311943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254998 + ... + 255531.

It is an arithmetic number, because the mean of its divisors is an integer number (22973850).

Almost surely, 2^136311243 is an apocalyptic number.

136311243 is a deficient number, since it is larger than the sum of its proper divisors (47479557).

136311243 is an equidigital number, since it uses as much as digits as its factorization.

136311243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510621.

The product of its digits is 1296, while the sum is 24.

The square root of 136311243 is about 11675.2405970926. The cubic root of 136311243 is about 514.6483199292.

Adding to 136311243 its reverse (342113631), we get a palindrome (478424874).

The spelling of 136311243 in words is "one hundred thirty-six million, three hundred eleven thousand, two hundred forty-three".