1311101323 has 4 divisors (see below), whose sum is σ = 1498401520. Its totient is φ = 1123801128.

The previous prime is 1311101299. The next prime is 1311101329. The reversal of 1311101323 is 3231011131.

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

It is a cyclic number.

It is not a de Polignac number, because 1311101323 - 2⁵ = 1311101291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311101297 and 1311101306.

It is not an unprimeable number, because it can be changed into a prime (1311101329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93650088 + ... + 93650101.

It is an arithmetic number, because the mean of its divisors is an integer number (374600380).

Almost surely, 2^1311101323 is an apocalyptic number.

1311101323 is a deficient number, since it is larger than the sum of its proper divisors (187300197).

1311101323 is an equidigital number, since it uses as much as digits as its factorization.

1311101323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187300196.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1311101323 is about 36209.1331434488. The cubic root of 1311101323 is about 1094.4907240266.

Adding to 1311101323 its reverse (3231011131), we get a palindrome (4542112454).

The spelling of 1311101323 in words is "one billion, three hundred eleven million, one hundred one thousand, three hundred twenty-three".