136207229 has 4 divisors (see below), whose sum is σ = 140904060. Its totient is φ = 131510400.

The previous prime is 136207217. The next prime is 136207231. The reversal of 136207229 is 922702631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 922702631 = 31 ⋅29764601.

It can be written as a sum of positive squares in 2 ways, for example, as 59644729 + 76562500 = 7723^2 + 8750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136207229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136207195 and 136207204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136207259) 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, 2348372 + ... + 2348429.

It is an arithmetic number, because the mean of its divisors is an integer number (35226015).

Almost surely, 2^136207229 is an apocalyptic number.

It is an amenable number.

136207229 is a deficient number, since it is larger than the sum of its proper divisors (4696831).

136207229 is an equidigital number, since it uses as much as digits as its factorization.

136207229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4696830.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 136207229 is about 11670.7852777780. The cubic root of 136207229 is about 514.5173836721.

The spelling of 136207229 in words is "one hundred thirty-six million, two hundred seven thousand, two hundred twenty-nine".