1311623022442 has 8 divisors (see below), whose sum is σ = 1985484392100. Its totient is φ = 649794891744.

The previous prime is 1311623022397. The next prime is 1311623022553. The reversal of 1311623022442 is 2442203261131.

It can be written as a sum of positive squares in 2 ways, for example, as 1300537248921 + 11085773521 = 1140411^2 + 105289^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3008309467 + ... + 3008309902.

Almost surely, 2^{1311623022442} is an apocalyptic number.

1311623022442 is a deficient number, since it is larger than the sum of its proper divisors (673861369658).

1311623022442 is a wasteful number, since it uses less digits than its factorization.

1311623022442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6016619480.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 1311623022442 its reverse (2442203261131), we get a palindrome (3753826283573).

The spelling of 1311623022442 in words is "one trillion, three hundred eleven billion, six hundred twenty-three million, twenty-two thousand, four hundred forty-two".