113031202120181 has 2 divisors, whose sum is σ = 113031202120182. Its totient is φ = 113031202120180.

The previous prime is 113031202120139. The next prime is 113031202120211. The reversal of 113031202120181 is 181021202130311.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96644825256100 + 16386376864081 = 9830810^2 + 4048009^2 .

It is a cyclic number.

It is not a de Polignac number, because 113031202120181 - 2¹⁴ = 113031202103797 is a prime.

It is a super-2 number, since 2×113031202120181² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 113031202120181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113031202120981) 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, 56515601060090 + 56515601060091.

It is an arithmetic number, because the mean of its divisors is an integer number (56515601060091).

Almost surely, 2^{113031202120181} is an apocalyptic number.

It is an amenable number.

113031202120181 is a deficient number, since it is larger than the sum of its proper divisors (1).

113031202120181 is an equidigital number, since it uses as much as digits as its factorization.

113031202120181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 26.

Adding to 113031202120181 its reverse (181021202130311), we get a palindrome (294052404250492).

The spelling of 113031202120181 in words is "one hundred thirteen trillion, thirty-one billion, two hundred two million, one hundred twenty thousand, one hundred eighty-one".