823485531 has 8 divisors (see below), whose sum is σ = 1197797184. Its totient is φ = 499082120.

The previous prime is 823485529. The next prime is 823485577. The reversal of 823485531 is 135584328.

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 823485531 - 2¹ = 823485529 is a prime.

It is a super-2 number, since 2×823485531² = 1356256839532703922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 823485531.

It is not an unprimeable number, because it can be changed into a prime (823485511) 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, 12477021 + ... + 12477086.

It is an arithmetic number, because the mean of its divisors is an integer number (149724648).

Almost surely, 2^823485531 is an apocalyptic number.

823485531 is a deficient number, since it is larger than the sum of its proper divisors (374311653).

823485531 is a wasteful number, since it uses less digits than its factorization.

823485531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24954121.

The product of its digits is 115200, while the sum is 39.

The square root of 823485531 is about 28696.4376012076. The cubic root of 823485531 is about 937.3144757864.

The spelling of 823485531 in words is "eight hundred twenty-three million, four hundred eighty-five thousand, five hundred thirty-one".