1030421321 has 4 divisors (see below), whose sum is σ = 1075222272. Its totient is φ = 985620372.

The previous prime is 1030421311. The next prime is 1030421351. The reversal of 1030421321 is 1231240301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1231240301 = 23 ⋅53532187.

It is a cyclic number.

It is not a de Polignac number, because 1030421321 - 2⁶ = 1030421257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1030421321.

It is not an unprimeable number, because it can be changed into a prime (1030421311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22400441 + ... + 22400486.

It is an arithmetic number, because the mean of its divisors is an integer number (268805568).

Almost surely, 2^1030421321 is an apocalyptic number.

It is an amenable number.

1030421321 is a deficient number, since it is larger than the sum of its proper divisors (44800951).

1030421321 is an equidigital number, since it uses as much as digits as its factorization.

1030421321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44800950.

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

The square root of 1030421321 is about 32100.1763390795. The cubic root of 1030421321 is about 1010.0393152033.

Adding to 1030421321 its reverse (1231240301), we get a palindrome (2261661622).

The spelling of 1030421321 in words is "one billion, thirty million, four hundred twenty-one thousand, three hundred twenty-one".