1030321421 has 2 divisors, whose sum is σ = 1030321422. Its totient is φ = 1030321420.

The previous prime is 1030321403. The next prime is 1030321427. The reversal of 1030321421 is 1241230301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 969637321 + 60684100 = 31139^2 + 7790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1030321421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1030321421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1030321427) 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 as a sum of consecutive naturals, namely, 515160710 + 515160711.

It is an arithmetic number, because the mean of its divisors is an integer number (515160711).

Almost surely, 2^1030321421 is an apocalyptic number.

It is an amenable number.

1030321421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1030321421 is an equidigital number, since it uses as much as digits as its factorization.

1030321421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1030321421 is about 32098.6202351441. The cubic root of 1030321421 is about 1010.0066728311.

Adding to 1030321421 its reverse (1241230301), we get a palindrome (2271551722).

The spelling of 1030321421 in words is "one billion, thirty million, three hundred twenty-one thousand, four hundred twenty-one".