823973361 has 16 divisors (see below), whose sum is σ = 1159814400. Its totient is φ = 518892048.

The previous prime is 823973347. The next prime is 823973377. The reversal of 823973361 is 163379328.

It is a happy number.

It is not a de Polignac number, because 823973361 - 2⁷ = 823973233 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (823273361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1051 + ... + 40608.

It is an arithmetic number, because the mean of its divisors is an integer number (72488400).

Almost surely, 2^823973361 is an apocalyptic number.

It is an amenable number.

823973361 is a deficient number, since it is larger than the sum of its proper divisors (335841039).

823973361 is a wasteful number, since it uses less digits than its factorization.

823973361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42028.

The product of its digits is 163296, while the sum is 42.

The square root of 823973361 is about 28704.9361782952. The cubic root of 823973361 is about 937.4995265420.

It can be divided in two parts, 82397 and 3361, that added together give a palindrome (85758).

The spelling of 823973361 in words is "eight hundred twenty-three million, nine hundred seventy-three thousand, three hundred sixty-one".