136816231 has 2 divisors, whose sum is σ = 136816232. Its totient is φ = 136816230.

The previous prime is 136816223. The next prime is 136816313. The reversal of 136816231 is 132618631.

136816231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136816231 - 2³ = 136816223 is a prime.

It is a super-2 number, since 2×136816231² = 37437362130090722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 136816193 and 136816202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136816331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68408115 + 68408116.

It is an arithmetic number, because the mean of its divisors is an integer number (68408116).

Almost surely, 2^136816231 is an apocalyptic number.

136816231 is a deficient number, since it is larger than the sum of its proper divisors (1).

136816231 is an equidigital number, since it uses as much as digits as its factorization.

136816231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 31.

The square root of 136816231 is about 11696.8470538004. The cubic root of 136816231 is about 515.2830705729.

The spelling of 136816231 in words is "one hundred thirty-six million, eight hundred sixteen thousand, two hundred thirty-one".