1311332323 has 4 divisors (see below), whose sum is σ = 1498665520. Its totient is φ = 1123999128.

The previous prime is 1311332317. The next prime is 1311332339. The reversal of 1311332323 is 3232331131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3232331131 = 51517 ⋅62743.

It is not a de Polignac number, because 1311332323 - 2²¹ = 1309235171 is a prime.

It is a super-2 number, since 2×1311332323² = 3439184922689152658, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311332294 and 1311332303.

It is not an unprimeable number, because it can be changed into a prime (1311332123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93666588 + ... + 93666601.

It is an arithmetic number, because the mean of its divisors is an integer number (374666380).

Almost surely, 2^1311332323 is an apocalyptic number.

1311332323 is a deficient number, since it is larger than the sum of its proper divisors (187333197).

1311332323 is an equidigital number, since it uses as much as digits as its factorization.

1311332323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187333196.

The product of its digits is 972, while the sum is 22.

The square root of 1311332323 is about 36212.3228059179. The cubic root of 1311332323 is about 1094.5549988734.

Adding to 1311332323 its reverse (3232331131), we get a palindrome (4543663454).

The spelling of 1311332323 in words is "one billion, three hundred eleven million, three hundred thirty-two thousand, three hundred twenty-three".