111030031061 has 2 divisors, whose sum is σ = 111030031062. Its totient is φ = 111030031060.

The previous prime is 111030031001. The next prime is 111030031129. The reversal of 111030031061 is 160130030111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71305554961 + 39724476100 = 267031^2 + 199310^2 .

It is a cyclic number.

It is not a de Polignac number, because 111030031061 - 2⁶ = 111030030997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111030031001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55515015530 + 55515015531.

It is an arithmetic number, because the mean of its divisors is an integer number (55515015531).

Almost surely, 2^111030031061 is an apocalyptic number.

It is an amenable number.

111030031061 is a deficient number, since it is larger than the sum of its proper divisors (1).

111030031061 is an equidigital number, since it uses as much as digits as its factorization.

111030031061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 111030031061 its reverse (160130030111), we get a palindrome (271160061172).

The spelling of 111030031061 in words is "one hundred eleven billion, thirty million, thirty-one thousand, sixty-one".