1311130202123 has 24 divisors (see below), whose sum is σ = 1544668171200. Its totient is φ = 1109478359808.

The previous prime is 1311130202111. The next prime is 1311130202131. The reversal of 1311130202123 is 3212020311131.

It is a happy number.

It is not a de Polignac number, because 1311130202123 - 2⁸ = 1311130201867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311130202095 and 1311130202104.

It is not an unprimeable number, because it can be changed into a prime (1311130202183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61495661 + ... + 61516977.

It is an arithmetic number, because the mean of its divisors is an integer number (64361173800).

Almost surely, 2^{1311130202123} is an apocalyptic number.

1311130202123 is a deficient number, since it is larger than the sum of its proper divisors (233537969077).

1311130202123 is a wasteful number, since it uses less digits than its factorization.

1311130202123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37299 (or 37292 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1311130202123 its reverse (3212020311131), we get a palindrome (4523150513254).

The spelling of 1311130202123 in words is "one trillion, three hundred eleven billion, one hundred thirty million, two hundred two thousand, one hundred twenty-three".