971823 has 8 divisors (see below), whose sum is σ = 1327536. Its totient is φ = 632000.

The previous prime is 971821. The next prime is 971833. The reversal of 971823 is 328179.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 971823 - 2¹ = 971821 is a prime.

971823 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3828 + ... + 4073.

It is an arithmetic number, because the mean of its divisors is an integer number (165942).

2⁹⁷¹⁸²³ is an apocalyptic number.

971823 is a deficient number, since it is larger than the sum of its proper divisors (355713).

971823 is a wasteful number, since it uses less digits than its factorization.

971823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7945.

The product of its digits is 3024, while the sum is 30.

The square root of 971823 is about 985.8108337810. The cubic root of 971823 is about 99.0518043331.

The spelling of 971823 in words is "nine hundred seventy-one thousand, eight hundred twenty-three".