223220131 has 4 divisors (see below), whose sum is σ = 223539264. Its totient is φ = 222901000.

The previous prime is 223220027. The next prime is 223220141. The reversal of 223220131 is 131022322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131022322 = 2 ⋅65511161.

It is a cyclic number.

It is not a de Polignac number, because 223220131 - 2⁷ = 223220003 is a prime.

It is a super-3 number, since 3×223220131³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223220141) 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, 158515 + ... + 159916.

It is an arithmetic number, because the mean of its divisors is an integer number (55884816).

Almost surely, 2^223220131 is an apocalyptic number.

223220131 is a deficient number, since it is larger than the sum of its proper divisors (319133).

223220131 is an equidigital number, since it uses as much as digits as its factorization.

223220131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319132.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 223220131 is about 14940.5532360753. The cubic root of 223220131 is about 606.6121708016.

Adding to 223220131 its reverse (131022322), we get a palindrome (354242453).

The spelling of 223220131 in words is "two hundred twenty-three million, two hundred twenty thousand, one hundred thirty-one".