1311053323 has 4 divisors (see below), whose sum is σ = 1312591168. Its totient is φ = 1309515480.

The previous prime is 1311053267. The next prime is 1311053327. The reversal of 1311053323 is 3233501131.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311053323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311053294 and 1311053303.

It is not an unprimeable number, because it can be changed into a prime (1311053327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 767643 + ... + 769348.

It is an arithmetic number, because the mean of its divisors is an integer number (328147792).

Almost surely, 2^1311053323 is an apocalyptic number.

1311053323 is a deficient number, since it is larger than the sum of its proper divisors (1537845).

1311053323 is an equidigital number, since it uses as much as digits as its factorization.

1311053323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537844.

The product of its (nonzero) digits is 810, while the sum is 22.

The square root of 1311053323 is about 36208.4703211831. The cubic root of 1311053323 is about 1094.4773672669.

Adding to 1311053323 its reverse (3233501131), we get a palindrome (4544554454).

The spelling of 1311053323 in words is "one billion, three hundred eleven million, fifty-three thousand, three hundred twenty-three".