1311140233123 has 4 divisors (see below), whose sum is σ = 1498445980720. Its totient is φ = 1123834485528.

The previous prime is 1311140233079. The next prime is 1311140233127. The reversal of 1311140233123 is 3213320411131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1311140233123 - 2²¹ = 1311138135971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311140233127) 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 3 ways as a sum of consecutive naturals, for example, 93652873788 + ... + 93652873801.

It is an arithmetic number, because the mean of its divisors is an integer number (374611495180).

Almost surely, 2^{1311140233123} is an apocalyptic number.

1311140233123 is a deficient number, since it is larger than the sum of its proper divisors (187305747597).

1311140233123 is an equidigital number, since it uses as much as digits as its factorization.

1311140233123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187305747596.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 1311140233123 its reverse (3213320411131), we get a palindrome (4524460644254).

The spelling of 1311140233123 in words is "one trillion, three hundred eleven billion, one hundred forty million, two hundred thirty-three thousand, one hundred twenty-three".