223136401 has 4 divisors (see below), whose sum is σ = 227884032. Its totient is φ = 218388772.

The previous prime is 223136383. The next prime is 223136429. The reversal of 223136401 is 104631322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104631322 = 2 ⋅52315661.

It is a cyclic number.

It is not a de Polignac number, because 223136401 - 2⁷ = 223136273 is a prime.

It is a super-3 number, since 3×223136401³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223136471) 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, 2373745 + ... + 2373838.

It is an arithmetic number, because the mean of its divisors is an integer number (56971008).

Almost surely, 2^223136401 is an apocalyptic number.

It is an amenable number.

223136401 is a deficient number, since it is larger than the sum of its proper divisors (4747631).

223136401 is an equidigital number, since it uses as much as digits as its factorization.

223136401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4747630.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 223136401 is about 14937.7508681863. The cubic root of 223136401 is about 606.5363144577.

Adding to 223136401 its reverse (104631322), we get a palindrome (327767723).

The spelling of 223136401 in words is "two hundred twenty-three million, one hundred thirty-six thousand, four hundred one".