1311011123343 has 16 divisors (see below), whose sum is σ = 1781092025856. Its totient is φ = 857470592160.

The previous prime is 1311011123339. The next prime is 1311011123363. The reversal of 1311011123343 is 3433211101131.

It is not a de Polignac number, because 1311011123343 - 2² = 1311011123339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311011123363) 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, 2880078 + ... + 3304068.

It is an arithmetic number, because the mean of its divisors is an integer number (111318251616).

Almost surely, 2^{1311011123343} is an apocalyptic number.

1311011123343 is a deficient number, since it is larger than the sum of its proper divisors (470080902513).

1311011123343 is a wasteful number, since it uses less digits than its factorization.

1311011123343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443494.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 1311011123343 its reverse (3433211101131), we get a palindrome (4744222224474).

The spelling of 1311011123343 in words is "one trillion, three hundred eleven billion, eleven million, one hundred twenty-three thousand, three hundred forty-three".