281030401 has 2 divisors, whose sum is σ = 281030402. Its totient is φ = 281030400.

The previous prime is 281030381. The next prime is 281030411. The reversal of 281030401 is 104030182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 265038400 + 15992001 = 16280^2 + 3999^2 .

It is a cyclic number.

It is not a de Polignac number, because 281030401 - 2¹⁹ = 280506113 is a prime.

It is not a weakly prime, because it can be changed into another prime (281030411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140515200 + 140515201.

It is an arithmetic number, because the mean of its divisors is an integer number (140515201).

Almost surely, 2^281030401 is an apocalyptic number.

It is an amenable number.

281030401 is a deficient number, since it is larger than the sum of its proper divisors (1).

281030401 is an equidigital number, since it uses as much as digits as its factorization.

281030401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 281030401 is about 16763.9613755222. The cubic root of 281030401 is about 655.0147820217.

Adding to 281030401 its reverse (104030182), we get a palindrome (385060583).

The spelling of 281030401 in words is "two hundred eighty-one million, thirty thousand, four hundred one".