111628133 has 2 divisors, whose sum is σ = 111628134. Its totient is φ = 111628132.

The previous prime is 111628091. The next prime is 111628141. The reversal of 111628133 is 331826111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107474689 + 4153444 = 10367^2 + 2038^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111628133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111628183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55814066 + 55814067.

It is an arithmetic number, because the mean of its divisors is an integer number (55814067).

Almost surely, 2^111628133 is an apocalyptic number.

It is an amenable number.

111628133 is a deficient number, since it is larger than the sum of its proper divisors (1).

111628133 is an equidigital number, since it uses as much as digits as its factorization.

111628133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 26.

The square root of 111628133 is about 10565.4215722800. The cubic root of 111628133 is about 481.4943777566.

The spelling of 111628133 in words is "one hundred eleven million, six hundred twenty-eight thousand, one hundred thirty-three".