1130213281 has 2 divisors, whose sum is σ = 1130213282. Its totient is φ = 1130213280.

The previous prime is 1130213243. The next prime is 1130213297. The reversal of 1130213281 is 1823120311.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 823403025 + 306810256 = 28695^2 + 17516^2 .

It is an emirp because it is prime and its reverse (1823120311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1130213281 - 2⁷ = 1130213153 is a prime.

It is a super-2 number, since 2×1130213281² = 2554764121097569922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1130213881) 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, 565106640 + 565106641.

It is an arithmetic number, because the mean of its divisors is an integer number (565106641).

Almost surely, 2^1130213281 is an apocalyptic number.

It is an amenable number.

1130213281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1130213281 is an equidigital number, since it uses as much as digits as its factorization.

1130213281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1130213281 is about 33618.6448418136. The cubic root of 1130213281 is about 1041.6459639562.

Adding to 1130213281 its reverse (1823120311), we get a palindrome (2953333592).

The spelling of 1130213281 in words is "one billion, one hundred thirty million, two hundred thirteen thousand, two hundred eighty-one".