1130321111 has 2 divisors, whose sum is σ = 1130321112. Its totient is φ = 1130321110.

The previous prime is 1130321099. The next prime is 1130321113. The reversal of 1130321111 is 1111230311.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1130321111 is a prime.

Together with 1130321113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1130321113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565160555 + 565160556.

It is an arithmetic number, because the mean of its divisors is an integer number (565160556).

Almost surely, 2^1130321111 is an apocalyptic number.

1130321111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1130321111 is an equidigital number, since it uses as much as digits as its factorization.

1130321111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1130321111 is about 33620.2485267435. The cubic root of 1130321111 is about 1041.6790895955.

Adding to 1130321111 its reverse (1111230311), we get a palindrome (2241551422).

The spelling of 1130321111 in words is "one billion, one hundred thirty million, three hundred twenty-one thousand, one hundred eleven".