6281321 has 2 divisors, whose sum is σ = 6281322. Its totient is φ = 6281320.

The previous prime is 6281309. The next prime is 6281329. The reversal of 6281321 is 1231826.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5125696 + 1155625 = 2264^2 + 1075^2 .

It is a cyclic number.

It is not a de Polignac number, because 6281321 - 2⁶ = 6281257 is a prime.

It is not a weakly prime, because it can be changed into another prime (6281329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3140660 + 3140661.

It is an arithmetic number, because the mean of its divisors is an integer number (3140661).

Almost surely, 2^6281321 is an apocalyptic number.

It is an amenable number.

6281321 is a deficient number, since it is larger than the sum of its proper divisors (1).

6281321 is an equidigital number, since it uses as much as digits as its factorization.

6281321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 23.

The square root of 6281321 is about 2506.2563715630. The cubic root of 6281321 is about 184.5087624944.

The spelling of 6281321 in words is "six million, two hundred eighty-one thousand, three hundred twenty-one".