223220121331031 has 64 divisors (see below), whose sum is σ = 259703428608000. Its totient is φ = 189980517242880.

The previous prime is 223220121331019. The next prime is 223220121331037. The reversal of 223220121331031 is 130133121022322.

It is not a de Polignac number, because 223220121331031 - 2²⁶ = 223220054222167 is a prime.

It is a super-3 number, since 3×223220121331031³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223220121331037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 428383430 + ... + 428904188.

It is an arithmetic number, because the mean of its divisors is an integer number (4057866072000).

Almost surely, 2^{223220121331031} is an apocalyptic number.

223220121331031 is a deficient number, since it is larger than the sum of its proper divisors (36483307276969).

223220121331031 is a wasteful number, since it uses less digits than its factorization.

223220121331031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521184.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 223220121331031 its reverse (130133121022322), we get a palindrome (353353242353353).

The spelling of 223220121331031 in words is "two hundred twenty-three trillion, two hundred twenty billion, one hundred twenty-one million, three hundred thirty-one thousand, thirty-one".