1243223313331 has 4 divisors (see below), whose sum is σ = 1260253769752. Its totient is φ = 1226192856912.

The previous prime is 1243223313323. The next prime is 1243223313337. The reversal of 1243223313331 is 1333133223421.

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 1243223313331 - 2³ = 1243223313323 is a prime.

It is a super-2 number, since 2×1243223313331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1243223313293 and 1243223313302.

It is not an unprimeable number, because it can be changed into a prime (1243223313337) 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, 8515228101 + ... + 8515228246.

It is an arithmetic number, because the mean of its divisors is an integer number (315063442438).

Almost surely, 2^{1243223313331} is an apocalyptic number.

1243223313331 is a deficient number, since it is larger than the sum of its proper divisors (17030456421).

1243223313331 is an equidigital number, since it uses as much as digits as its factorization.

1243223313331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17030456420.

The product of its digits is 23328, while the sum is 31.

Adding to 1243223313331 its reverse (1333133223421), we get a palindrome (2576356536752).

The spelling of 1243223313331 in words is "one trillion, two hundred forty-three billion, two hundred twenty-three million, three hundred thirteen thousand, three hundred thirty-one".