111630133 has 2 divisors, whose sum is σ = 111630134. Its totient is φ = 111630132.

The previous prime is 111630131. The next prime is 111630139. The reversal of 111630133 is 331036111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80694289 + 30935844 = 8983^2 + 5562^2 .

It is a cyclic number.

It is not a de Polignac number, because 111630133 - 2¹ = 111630131 is a prime.

It is a super-2 number, since 2×111630133² = 24922573187195378, which contains 22 as substring.

Together with 111630131, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 111630133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111630131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55815066 + 55815067.

It is an arithmetic number, because the mean of its divisors is an integer number (55815067).

Almost surely, 2^111630133 is an apocalyptic number.

It is an amenable number.

111630133 is a deficient number, since it is larger than the sum of its proper divisors (1).

111630133 is an equidigital number, since it uses as much as digits as its factorization.

111630133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 111630133 is about 10565.5162202327. The cubic root of 111630133 is about 481.4972533251.

Adding to 111630133 its reverse (331036111), we get a palindrome (442666244).

The spelling of 111630133 in words is "one hundred eleven million, six hundred thirty thousand, one hundred thirty-three".