1311003323043 has 16 divisors (see below), whose sum is σ = 1840056069120. Its totient is φ = 827978966496.

The previous prime is 1311003323011. The next prime is 1311003323053. The reversal of 1311003323043 is 3403233001131.

It is a happy number.

It is not a de Polignac number, because 1311003323043 - 2⁵ = 1311003323011 is a prime.

It is a super-2 number, since 2×1311003323043² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1311003323053) 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, 1866421 + ... + 2470937.

It is an arithmetic number, because the mean of its divisors is an integer number (115003504320).

Almost surely, 2^{1311003323043} is an apocalyptic number.

1311003323043 is a deficient number, since it is larger than the sum of its proper divisors (529052746077).

1311003323043 is a wasteful number, since it uses less digits than its factorization.

1311003323043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642586.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 1311003323043 its reverse (3403233001131), we get a palindrome (4714236324174).

The spelling of 1311003323043 in words is "one trillion, three hundred eleven billion, three million, three hundred twenty-three thousand, forty-three".