1130123213 has 2 divisors, whose sum is σ = 1130123214. Its totient is φ = 1130123212.

The previous prime is 1130123207. The next prime is 1130123251. The reversal of 1130123213 is 3123210311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1129833769 + 289444 = 33613^2 + 538^2 .

It is a cyclic number.

It is not a de Polignac number, because 1130123213 - 2²⁶ = 1063014349 is a prime.

It is a super-2 number, since 2×1130123213² = 2554356953122886738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1130123191 and 1130123200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1130120213) 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, 565061606 + 565061607.

It is an arithmetic number, because the mean of its divisors is an integer number (565061607).

Almost surely, 2^1130123213 is an apocalyptic number.

It is an amenable number.

1130123213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1130123213 is an equidigital number, since it uses as much as digits as its factorization.

1130123213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1130123213 is about 33617.3052608326. The cubic root of 1130123213 is about 1041.6182932317.

Adding to 1130123213 its reverse (3123210311), we get a palindrome (4253333524).

The spelling of 1130123213 in words is "one billion, one hundred thirty million, one hundred twenty-three thousand, two hundred thirteen".