1311030331123 has 8 divisors (see below), whose sum is σ = 1316802931200. Its totient is φ = 1305260124168.

The previous prime is 1311030331109. The next prime is 1311030331133. The reversal of 1311030331123 is 3211330301131.

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-1311030331123 is a prime.

It is a super-2 number, since 2×1311030331123² (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 = 1311030331094 and 1311030331103.

It is not an unprimeable number, because it can be changed into a prime (1311030331103) 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, 504258 + ... + 1695976.

It is an arithmetic number, because the mean of its divisors is an integer number (164600366400).

Almost surely, 2^{1311030331123} is an apocalyptic number.

1311030331123 is a deficient number, since it is larger than the sum of its proper divisors (5772600077).

1311030331123 is a wasteful number, since it uses less digits than its factorization.

1311030331123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196561.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 1311030331123 its reverse (3211330301131), we get a palindrome (4522360632254).

The spelling of 1311030331123 in words is "one trillion, three hundred eleven billion, thirty million, three hundred thirty-one thousand, one hundred twenty-three".