1223343303444 has 18 divisors (see below), whose sum is σ = 3092340017130. Its totient is φ = 407781101136.

The previous prime is 1223343303421. The next prime is 1223343303461. The reversal of 1223343303444 is 4443033433221.

1223343303444 is a `hidden beast` number, since 1 + 2 + 2 + 3 + 343 + 303 + 4 + 4 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 786435523344 + 436907780100 = 886812^2 + 660990^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1223343303444² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 33981758429 = 1223343303444 / (1 + 2 + 2 + 3 + 3 + 4 + 3 + 3 + 0 + 3 + 4 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 1223343303399 and 1223343303408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16990879179 + ... + 16990879250.

Almost surely, 2^{1223343303444} is an apocalyptic number.

It is an amenable number.

1223343303444 is an abundant number, since it is smaller than the sum of its proper divisors (1868996713686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223343303444 is a wasteful number, since it uses less digits than its factorization.

1223343303444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33981758439 (or 33981758434 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 36.

Adding to 1223343303444 its reverse (4443033433221), we get a palindrome (5666376736665).

The spelling of 1223343303444 in words is "one trillion, two hundred twenty-three billion, three hundred forty-three million, three hundred three thousand, four hundred forty-four".