223136309 has 8 divisors (see below), whose sum is σ = 249359040. Its totient is φ = 197903200.

The previous prime is 223136297. The next prime is 223136311. The reversal of 223136309 is 903631322.

223136309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 223136309 - 2⁴ = 223136293 is a prime.

It is a super-3 number, since 3×223136309³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223136359) 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, 246929 + ... + 247830.

It is an arithmetic number, because the mean of its divisors is an integer number (31169880).

Almost surely, 2^223136309 is an apocalyptic number.

It is an amenable number.

223136309 is a deficient number, since it is larger than the sum of its proper divisors (26222731).

223136309 is a wasteful number, since it uses less digits than its factorization.

223136309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494811.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 223136309 is about 14937.7477887398. The cubic root of 223136309 is about 606.5362310986.

The spelling of 223136309 in words is "two hundred twenty-three million, one hundred thirty-six thousand, three hundred nine".