10191871 has 4 divisors (see below), whose sum is σ = 10217200. Its totient is φ = 10166544.

The previous prime is 10191833. The next prime is 10191889. The reversal of 10191871 is 17819101.

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 10191871 - 2⁷ = 10191743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10191271) 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, 12051 + ... + 12868.

It is an arithmetic number, because the mean of its divisors is an integer number (2554300).

Almost surely, 2^10191871 is an apocalyptic number.

10191871 is a deficient number, since it is larger than the sum of its proper divisors (25329).

10191871 is an equidigital number, since it uses as much as digits as its factorization.

10191871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25328.

The product of its (nonzero) digits is 504, while the sum is 28.

The square root of 10191871 is about 3192.4709865557. The cubic root of 10191871 is about 216.8126608416.

The spelling of 10191871 in words is "ten million, one hundred ninety-one thousand, eight hundred seventy-one".