11111030131001 has 2 divisors, whose sum is σ = 11111030131002. Its totient is φ = 11111030131000.

The previous prime is 11111030130989. The next prime is 11111030131021. The reversal of 11111030131001 is 10013103011111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11093569151401 + 17460979600 = 3330701^2 + 132140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11111030131001 is a prime.

It is not a weakly prime, because it can be changed into another prime (11111030131021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555515065500 + 5555515065501.

It is an arithmetic number, because the mean of its divisors is an integer number (5555515065501).

Almost surely, 2^{11111030131001} is an apocalyptic number.

It is an amenable number.

11111030131001 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111030131001 is an equidigital number, since it uses as much as digits as its factorization.

11111030131001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9, while the sum is 14.

Adding to 11111030131001 its reverse (10013103011111), we get a palindrome (21124133142112).

The spelling of 11111030131001 in words is "eleven trillion, one hundred eleven billion, thirty million, one hundred thirty-one thousand, one".