11870971 has 4 divisors (see below), whose sum is σ = 13566832. Its totient is φ = 10175112.

The previous prime is 11870951. The next prime is 11870983. The reversal of 11870971 is 17907811.

11870971 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17907811 = 199 ⋅89989.

It is a cyclic number.

It is not a de Polignac number, because 11870971 - 2⁵ = 11870939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11870951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 847920 + ... + 847933.

It is an arithmetic number, because the mean of its divisors is an integer number (3391708).

Almost surely, 2^11870971 is an apocalyptic number.

11870971 is a deficient number, since it is larger than the sum of its proper divisors (1695861).

11870971 is an equidigital number, since it uses as much as digits as its factorization.

11870971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695860.

The product of its (nonzero) digits is 3528, while the sum is 34.

The square root of 11870971 is about 3445.4275496664. The cubic root of 11870971 is about 228.1193268371.

The spelling of 11870971 in words is "eleven million, eight hundred seventy thousand, nine hundred seventy-one".