11947315 has 4 divisors (see below), whose sum is σ = 14336784. Its totient is φ = 9557848.

The previous prime is 11947303. The next prime is 11947321. The reversal of 11947315 is 51374911.

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 11947315 - 2⁵ = 11947283 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 1194727 + ... + 1194736.

It is an arithmetic number, because the mean of its divisors is an integer number (3584196).

Almost surely, 2^11947315 is an apocalyptic number.

11947315 is a deficient number, since it is larger than the sum of its proper divisors (2389469).

11947315 is an equidigital number, since it uses as much as digits as its factorization.

11947315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2389468.

The product of its digits is 3780, while the sum is 31.

The square root of 11947315 is about 3456.4888253834. The cubic root of 11947315 is about 228.6073054733.

It can be divided in two parts, 1194 and 7315, that multiplied together give a triangular number (8734110 = T₄₁₇₉).

The spelling of 11947315 in words is "eleven million, nine hundred forty-seven thousand, three hundred fifteen".