803212281 has 45 divisors (see below), whose sum is σ = 1244503029. Its totient is φ = 516259656.

The previous prime is 803212259. The next prime is 803212307. The reversal of 803212281 is 182212308.

The square root of 803212281 is 28341.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 803212281 - 2⁹ = 803211769 is a prime.

It is a super-2 number, since 2×803212281² = 1290299936698445922, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (803210281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 11988210 + ... + 11988276.

Almost surely, 2^803212281 is an apocalyptic number.

803212281 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

803212281 is the 28341-st square number.

803212281 is the 14171-st centered octagonal number.

It is an amenable number.

803212281 is a deficient number, since it is larger than the sum of its proper divisors (441290748).

803212281 is an frugal number, since it uses more digits than its factorization.

803212281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The cubic root of 803212281 is about 929.5586146897.

Adding to 803212281 its sum of digits (27), we get a palindrome (803212308).

Adding to 803212281 its reverse (182212308), we get a palindrome (985424589).

The spelling of 803212281 in words is "eight hundred three million, two hundred twelve thousand, two hundred eighty-one".