11305897 has 4 divisors (see below), whose sum is σ = 11546496. Its totient is φ = 11065300.

The previous prime is 11305891. The next prime is 11305909. The reversal of 11305897 is 79850311.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79850311 = 29 ⋅2753459.

It is a cyclic number.

It is not a de Polignac number, because 11305897 - 2²³ = 2917289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11305891) 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 in 3 ways as a sum of consecutive naturals, for example, 120229 + ... + 120322.

It is an arithmetic number, because the mean of its divisors is an integer number (2886624).

Almost surely, 2^11305897 is an apocalyptic number.

It is an amenable number.

11305897 is a deficient number, since it is larger than the sum of its proper divisors (240599).

11305897 is an equidigital number, since it uses as much as digits as its factorization.

11305897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240598.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 11305897 is about 3362.4242742402. The cubic root of 11305897 is about 224.4407311759.

The spelling of 11305897 in words is "eleven million, three hundred five thousand, eight hundred ninety-seven".