1311424442331 has 4 divisors (see below), whose sum is σ = 1748565923112. Its totient is φ = 874282961552.

The previous prime is 1311424442329. The next prime is 1311424442347. The reversal of 1311424442331 is 1332444241131.

It is a happy number.

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 1311424442331 - 2¹ = 1311424442329 is a prime.

It is a super-2 number, since 2×1311424442331² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1311424442292 and 1311424442301.

It is not an unprimeable number, because it can be changed into a prime (1311424442381) 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, 218570740386 + ... + 218570740391.

It is an arithmetic number, because the mean of its divisors is an integer number (437141480778).

Almost surely, 2^{1311424442331} is an apocalyptic number.

1311424442331 is a deficient number, since it is larger than the sum of its proper divisors (437141480781).

1311424442331 is an equidigital number, since it uses as much as digits as its factorization.

1311424442331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437141480780.

The product of its digits is 27648, while the sum is 33.

Adding to 1311424442331 its reverse (1332444241131), we get a palindrome (2643868683462).

The spelling of 1311424442331 in words is "one trillion, three hundred eleven billion, four hundred twenty-four million, four hundred forty-two thousand, three hundred thirty-one".