1311061331131 has 8 divisors (see below), whose sum is σ = 1311895584000. Its totient is φ = 1310227227240.

The previous prime is 1311061331089. The next prime is 1311061331137. The reversal of 1311061331131 is 1311331601131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1311061331131 - 2¹³ = 1311061322939 is a prime.

It is a super-2 number, since 2×1311061331131² (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 = 1311061331096 and 1311061331105.

It is not an unprimeable number, because it can be changed into a prime (1311061331137) 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, 21388116 + ... + 21449326.

It is an arithmetic number, because the mean of its divisors is an integer number (163986948000).

Almost surely, 2^{1311061331131} is an apocalyptic number.

1311061331131 is a deficient number, since it is larger than the sum of its proper divisors (834252869).

1311061331131 is a wasteful number, since it uses less digits than its factorization.

1311061331131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74489.

The product of its (nonzero) digits is 486, while the sum is 25.

Adding to 1311061331131 its reverse (1311331601131), we get a palindrome (2622392932262).

The spelling of 1311061331131 in words is "one trillion, three hundred eleven billion, sixty-one million, three hundred thirty-one thousand, one hundred thirty-one".