223220313231 has 8 divisors (see below), whose sum is σ = 297629532720. Its totient is φ = 148812317952.

The previous prime is 223220313229. The next prime is 223220313257. The reversal of 223220313231 is 132313022322.

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

It is not a de Polignac number, because 223220313231 - 2¹ = 223220313229 is a prime.

It is a super-3 number, since 3×223220313231³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223220313331) 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, 279391 + ... + 724223.

It is an arithmetic number, because the mean of its divisors is an integer number (37203691590).

Almost surely, 2^223220313231 is an apocalyptic number.

223220313231 is a deficient number, since it is larger than the sum of its proper divisors (74409219489).

223220313231 is a wasteful number, since it uses less digits than its factorization.

223220313231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612105.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 223220313231 its reverse (132313022322), we get a palindrome (355533335553).

The spelling of 223220313231 in words is "two hundred twenty-three billion, two hundred twenty million, three hundred thirteen thousand, two hundred thirty-one".