1311435164123 has 16 divisors (see below), whose sum is σ = 1547191296000. Its totient is φ = 1087783927200.

The previous prime is 1311435164059. The next prime is 1311435164129. The reversal of 1311435164123 is 3214615341131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1311435164123 - 2⁶ = 1311435164059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311435164129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6239753 + ... + 6446501.

It is an arithmetic number, because the mean of its divisors is an integer number (96699456000).

Almost surely, 2^{1311435164123} is an apocalyptic number.

1311435164123 is a deficient number, since it is larger than the sum of its proper divisors (235756131877).

1311435164123 is a wasteful number, since it uses less digits than its factorization.

1311435164123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236018.

The product of its digits is 25920, while the sum is 35.

The spelling of 1311435164123 in words is "one trillion, three hundred eleven billion, four hundred thirty-five million, one hundred sixty-four thousand, one hundred twenty-three".