1311122420331 has 8 divisors (see below), whose sum is σ = 1749082836624. Its totient is φ = 873621808800.

The previous prime is 1311122420303. The next prime is 1311122420339. The reversal of 1311122420331 is 1330242211131.

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

It is not a de Polignac number, because 1311122420331 - 2¹⁰ = 1311122419307 is a prime.

It is a super-2 number, since 2×1311122420331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1311122420339) 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, 114944536 + ... + 114955941.

It is an arithmetic number, because the mean of its divisors is an integer number (218635354578).

Almost surely, 2^{1311122420331} is an apocalyptic number.

1311122420331 is a deficient number, since it is larger than the sum of its proper divisors (437960416293).

1311122420331 is a wasteful number, since it uses less digits than its factorization.

1311122420331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229902381.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 1311122420331 its reverse (1330242211131), we get a palindrome (2641364631462).

The spelling of 1311122420331 in words is "one trillion, three hundred eleven billion, one hundred twenty-two million, four hundred twenty thousand, three hundred thirty-one".