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1030457321 is a prime number
BaseRepresentation
bin111101011010111…
…000011111101001
32122210222122200222
4331122320133221
54102244113241
6250130135425
734351512515
oct7532703751
92583878628
101030457321
11489736923
12249121575
1313564237a
149abd9145
15606eaa4b
hex3d6b87e9

1030457321 has 2 divisors, whose sum is σ = 1030457322. Its totient is φ = 1030457320.

The previous prime is 1030457303. The next prime is 1030457341. The reversal of 1030457321 is 1237540301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 628053721 + 402403600 = 25061^2 + 20060^2 .

It is a cyclic number.

It is not a de Polignac number, because 1030457321 - 214 = 1030440937 is a prime.

It is a super-3 number, since 3×10304573213 (a number of 28 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1030457341) 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 as a sum of consecutive naturals, namely, 515228660 + 515228661.

It is an arithmetic number, because the mean of its divisors is an integer number (515228661).

Almost surely, 21030457321 is an apocalyptic number.

It is an amenable number.

1030457321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1030457321 is an equidigital number, since it uses as much as digits as its factorization.

1030457321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 1030457321 is about 32100.7370787650. The cubic root of 1030457321 is about 1010.0510777031.

Adding to 1030457321 its reverse (1237540301), we get a palindrome (2267997622).

The spelling of 1030457321 in words is "one billion, thirty million, four hundred fifty-seven thousand, three hundred twenty-one".