11348781 has 4 divisors (see below), whose sum is σ = 15131712. Its totient is φ = 7565852.

The previous prime is 11348749. The next prime is 11348783. The reversal of 11348781 is 18784311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11348781 - 2⁵ = 11348749 is a prime.

It is a super-2 number, since 2×11348781² = 257589660371922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11348783) 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, 1891461 + ... + 1891466.

It is an arithmetic number, because the mean of its divisors is an integer number (3782928).

Almost surely, 2^11348781 is an apocalyptic number.

It is an amenable number.

11348781 is a deficient number, since it is larger than the sum of its proper divisors (3782931).

11348781 is an equidigital number, since it uses as much as digits as its factorization.

11348781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3782930.

The product of its digits is 5376, while the sum is 33.

The square root of 11348781 is about 3368.7951852257. The cubic root of 11348781 is about 224.7241458866.

The spelling of 11348781 in words is "eleven million, three hundred forty-eight thousand, seven hundred eighty-one".