11313578 has 4 divisors (see below), whose sum is σ = 16970370. Its totient is φ = 5656788.

The previous prime is 11313571. The next prime is 11313583. The reversal of 11313578 is 87531311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87531311 = 7 ⋅12504473.

It can be written as a sum of positive squares in only one way, i.e., 10029889 + 1283689 = 3167^2 + 1133^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11313578.

It is not an unprimeable number, because it can be changed into a prime (11313571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2828393 + ... + 2828396.

Almost surely, 2^11313578 is an apocalyptic number.

11313578 is a deficient number, since it is larger than the sum of its proper divisors (5656792).

11313578 is an equidigital number, since it uses as much as digits as its factorization.

11313578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5656791.

The product of its digits is 2520, while the sum is 29.

The square root of 11313578 is about 3363.5662621688. The cubic root of 11313578 is about 224.4915465159.

Adding to 11313578 its reverse (87531311), we get a palindrome (98844889).

The spelling of 11313578 in words is "eleven million, three hundred thirteen thousand, five hundred seventy-eight".