1311201433103 has 16 divisors (see below), whose sum is σ = 1381892768256. Its totient is φ = 1241657350560.

The previous prime is 1311201433099. The next prime is 1311201433111. The reversal of 1311201433103 is 3013341021131.

It is a cyclic number.

It is not a de Polignac number, because 1311201433103 - 2² = 1311201433099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311201433123) 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, 8310476 + ... + 8466782.

It is an arithmetic number, because the mean of its divisors is an integer number (86368298016).

Almost surely, 2^{1311201433103} is an apocalyptic number.

1311201433103 is a deficient number, since it is larger than the sum of its proper divisors (70691335153).

1311201433103 is a wasteful number, since it uses less digits than its factorization.

1311201433103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159974.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1311201433103 its reverse (3013341021131), we get a palindrome (4324542454234).

The spelling of 1311201433103 in words is "one trillion, three hundred eleven billion, two hundred one million, four hundred thirty-three thousand, one hundred three".