223106311021623 has 4 divisors (see below), whose sum is σ = 297475081362168. Its totient is φ = 148737540681080.

The previous prime is 223106311021613. The next prime is 223106311021651. The reversal of 223106311021623 is 326120113601322.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223106311021623 is a prime.

It is a super-3 number, since 3×223106311021623³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223106311021613) 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, 37184385170268 + ... + 37184385170273.

It is an arithmetic number, because the mean of its divisors is an integer number (74368770340542).

Almost surely, 2^{223106311021623} is an apocalyptic number.

223106311021623 is a deficient number, since it is larger than the sum of its proper divisors (74368770340545).

223106311021623 is an equidigital number, since it uses as much as digits as its factorization.

223106311021623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74368770340544.

The product of its (nonzero) digits is 15552, while the sum is 33.

Adding to 223106311021623 its reverse (326120113601322), we get a palindrome (549226424622945).

The spelling of 223106311021623 in words is "two hundred twenty-three trillion, one hundred six billion, three hundred eleven million, twenty-one thousand, six hundred twenty-three".