4023281 has 2 divisors, whose sum is σ = 4023282. Its totient is φ = 4023280.

The previous prime is 4023277. The next prime is 4023287. The reversal of 4023281 is 1823204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3936256 + 87025 = 1984^2 + 295^2 .

It is a cyclic number.

It is not a de Polignac number, because 4023281 - 2² = 4023277 is a prime.

It is a super-2 number, since 2×4023281² = 32373580009922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4023287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2011640 + 2011641.

It is an arithmetic number, because the mean of its divisors is an integer number (2011641).

Almost surely, 2^4023281 is an apocalyptic number.

It is an amenable number.

4023281 is a deficient number, since it is larger than the sum of its proper divisors (1).

4023281 is an equidigital number, since it uses as much as digits as its factorization.

4023281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4023281 is about 2005.8118057285. The cubic root of 4023281 is about 159.0474786681.

Adding to 4023281 its reverse (1823204), we get a palindrome (5846485).

The spelling of 4023281 in words is "four million, twenty-three thousand, two hundred eighty-one".