1130030381 has 2 divisors, whose sum is σ = 1130030382. Its totient is φ = 1130030380.

The previous prime is 1130030371. The next prime is 1130030413. The reversal of 1130030381 is 1830300311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 626701156 + 503329225 = 25034^2 + 22435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1130030381 is a prime.

It is a super-2 number, since 2×1130030381² = 2553937323966010322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1130030371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565015190 + 565015191.

It is an arithmetic number, because the mean of its divisors is an integer number (565015191).

Almost surely, 2^1130030381 is an apocalyptic number.

It is an amenable number.

1130030381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1130030381 is an equidigital number, since it uses as much as digits as its factorization.

1130030381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1130030381 is about 33615.9245150271. The cubic root of 1130030381 is about 1041.5897718115.

Adding to 1130030381 its reverse (1830300311), we get a palindrome (2960330692).

The spelling of 1130030381 in words is "one billion, one hundred thirty million, thirty thousand, three hundred eighty-one".