1315322111 has 4 divisors (see below), whose sum is σ = 1324785000. Its totient is φ = 1305859224.

The previous prime is 1315322093. The next prime is 1315322117. The reversal of 1315322111 is 1112235131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1112235131 = 7 ⋅158890733.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1315322111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315322117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4731236 + ... + 4731513.

It is an arithmetic number, because the mean of its divisors is an integer number (331196250).

Almost surely, 2^1315322111 is an apocalyptic number.

1315322111 is a deficient number, since it is larger than the sum of its proper divisors (9462889).

1315322111 is an equidigital number, since it uses as much as digits as its factorization.

1315322111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9462888.

The product of its digits is 180, while the sum is 20.

The square root of 1315322111 is about 36267.3697833190. The cubic root of 1315322111 is about 1095.6639526755.

Adding to 1315322111 its reverse (1112235131), we get a palindrome (2427557242).

The spelling of 1315322111 in words is "one billion, three hundred fifteen million, three hundred twenty-two thousand, one hundred eleven".