971206823 has 4 divisors (see below), whose sum is σ = 972208008. Its totient is φ = 970205640.

The previous prime is 971206771. The next prime is 971206861. The reversal of 971206823 is 328602179.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 328602179 = 3821 ⋅85999.

It is a cyclic number.

It is not a de Polignac number, because 971206823 - 2⁸ = 971206567 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 (971200823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499136 + ... + 501077.

It is an arithmetic number, because the mean of its divisors is an integer number (243052002).

Almost surely, 2^971206823 is an apocalyptic number.

971206823 is a deficient number, since it is larger than the sum of its proper divisors (1001185).

971206823 is a wasteful number, since it uses less digits than its factorization.

971206823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001184.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 971206823 is about 31164.1913580314. The cubic root of 971206823 is about 990.3086555875.

The spelling of 971206823 in words is "nine hundred seventy-one million, two hundred six thousand, eight hundred twenty-three".