223212111000031 has 4 divisors (see below), whose sum is σ = 224633844191272. Its totient is φ = 221790377808792.

The previous prime is 223212111000017. The next prime is 223212111000097. The reversal of 223212111000031 is 130000111212322.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 223212111000031 - 2¹⁹ = 223212110475743 is a prime.

It is a super-3 number, since 3×223212111000031³ (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 junction number, because it is equal to n+sod(n) for n = 223212110999972 and 223212111000008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223212111000001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 710866595385 + ... + 710866595698.

It is an arithmetic number, because the mean of its divisors is an integer number (56158461047818).

Almost surely, 2^{223212111000031} is an apocalyptic number.

223212111000031 is a deficient number, since it is larger than the sum of its proper divisors (1421733191241).

223212111000031 is a wasteful number, since it uses less digits than its factorization.

223212111000031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421733191240.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 223212111000031 its reverse (130000111212322), we get a palindrome (353212222212353).

The spelling of 223212111000031 in words is "two hundred twenty-three trillion, two hundred twelve billion, one hundred eleven million, thirty-one", and thus it is an aban number.