823481 has 2 divisors, whose sum is σ = 823482. Its totient is φ = 823480.

The previous prime is 823457. The next prime is 823483. The reversal of 823481 is 184328.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 781456 + 42025 = 884^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 823481 - 2¹⁴ = 807097 is a prime.

It is a super-2 number, since 2×823481² = 1356241914722, which contains 22 as substring.

Together with 823483, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 823481.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (823483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411740 + 411741.

It is an arithmetic number, because the mean of its divisors is an integer number (411741).

2⁸²³⁴⁸¹ is an apocalyptic number.

It is an amenable number.

823481 is a deficient number, since it is larger than the sum of its proper divisors (1).

823481 is an equidigital number, since it uses as much as digits as its factorization.

823481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536, while the sum is 26.

The square root of 823481 is about 907.4585389978. The cubic root of 823481 is about 93.7312756679.

The spelling of 823481 in words is "eight hundred twenty-three thousand, four hundred eighty-one".