823531963 has 2 divisors, whose sum is σ = 823531964. Its totient is φ = 823531962.

The previous prime is 823531949. The next prime is 823531987. The reversal of 823531963 is 369135328.

823531963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 823531963 - 2⁵ = 823531931 is a prime.

It is not a weakly prime, because it can be changed into another prime (823531913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411765981 + 411765982.

It is an arithmetic number, because the mean of its divisors is an integer number (411765982).

Almost surely, 2^823531963 is an apocalyptic number.

823531963 is a deficient number, since it is larger than the sum of its proper divisors (1).

823531963 is an equidigital number, since it uses as much as digits as its factorization.

823531963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 40.

The square root of 823531963 is about 28697.2466100844. The cubic root of 823531963 is about 937.3320921929.

The spelling of 823531963 in words is "eight hundred twenty-three million, five hundred thirty-one thousand, nine hundred sixty-three".