1311623022431 has 8 divisors (see below), whose sum is σ = 1314677704080. Its totient is φ = 1308568764672.

The previous prime is 1311623022397. The next prime is 1311623022553. The reversal of 1311623022431 is 1342203261131.

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-1311623022431 is a prime.

It is a super-2 number, since 2×1311623022431² (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 = 1311623022394 and 1311623022403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311623022131) 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, 6579125 + ... + 6775553.

It is an arithmetic number, because the mean of its divisors is an integer number (164334713010).

Almost surely, 2^{1311623022431} is an apocalyptic number.

1311623022431 is a deficient number, since it is larger than the sum of its proper divisors (3054681649).

1311623022431 is a wasteful number, since it uses less digits than its factorization.

1311623022431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211945.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 1311623022431 its reverse (1342203261131), we get a palindrome (2653826283562).

The spelling of 1311623022431 in words is "one trillion, three hundred eleven billion, six hundred twenty-three million, twenty-two thousand, four hundred thirty-one".