1310031111123 has 48 divisors (see below), whose sum is σ = 2188286626240. Its totient is φ = 739731439872.

The previous prime is 1310031111119. The next prime is 1310031111127. The reversal of 1310031111123 is 3211111300131.

It is an interprime number because it is at equal distance from previous prime (1310031111119) and next prime (1310031111127).

It is not a de Polignac number, because 1310031111123 - 2² = 1310031111119 is a prime.

It is a super-2 number, since 2×1310031111123² (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 = 1310031111096 and 1310031111105.

It is not an unprimeable number, because it can be changed into a prime (1310031111127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2305665 + ... + 2817117.

Almost surely, 2^{1310031111123} is an apocalyptic number.

1310031111123 is a deficient number, since it is larger than the sum of its proper divisors (878255515117).

1310031111123 is a wasteful number, since it uses less digits than its factorization.

1310031111123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511948 (or 511945 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 1310031111123 its reverse (3211111300131), we get a palindrome (4521142411254).

The spelling of 1310031111123 in words is "one trillion, three hundred ten billion, thirty-one million, one hundred eleven thousand, one hundred twenty-three".