136870223 has 4 divisors (see below), whose sum is σ = 156423120. Its totient is φ = 117317328.

The previous prime is 136870219. The next prime is 136870231. The reversal of 136870223 is 322078631.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 136870223 - 2² = 136870219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136870223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136870823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9776438 + ... + 9776451.

It is an arithmetic number, because the mean of its divisors is an integer number (39105780).

Almost surely, 2^136870223 is an apocalyptic number.

136870223 is a deficient number, since it is larger than the sum of its proper divisors (19552897).

136870223 is an equidigital number, since it uses as much as digits as its factorization.

136870223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19552896.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 136870223 is about 11699.1547985314. The cubic root of 136870223 is about 515.3508439758.

The spelling of 136870223 in words is "one hundred thirty-six million, eight hundred seventy thousand, two hundred twenty-three".