1311223124441 has 8 divisors (see below), whose sum is σ = 1323293396040. Its totient is φ = 1299153593088.

The previous prime is 1311223124411. The next prime is 1311223124447. The reversal of 1311223124441 is 1444213221131.

It can be written as a sum of positive squares in 4 ways, for example, as 305256250000 + 1005966874441 = 552500^2 + 1002979^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311223124441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311223124447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3758855 + ... + 4092851.

It is an arithmetic number, because the mean of its divisors is an integer number (165411674505).

Almost surely, 2^{1311223124441} is an apocalyptic number.

It is an amenable number.

1311223124441 is a deficient number, since it is larger than the sum of its proper divisors (12070271599).

1311223124441 is a wasteful number, since it uses less digits than its factorization.

1311223124441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370123.

The product of its digits is 4608, while the sum is 29.

Adding to 1311223124441 its reverse (1444213221131), we get a palindrome (2755436345572).

The spelling of 1311223124441 in words is "one trillion, three hundred eleven billion, two hundred twenty-three million, one hundred twenty-four thousand, four hundred forty-one".