113031011161 has 2 divisors, whose sum is σ = 113031011162. Its totient is φ = 113031011160.

The previous prime is 113031011131. The next prime is 113031011167. The reversal of 113031011161 is 161110130311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109855125136 + 3175886025 = 331444^2 + 56355^2 .

It is a cyclic number.

It is not a de Polignac number, because 113031011161 - 2⁹ = 113031010649 is a prime.

It is not a weakly prime, because it can be changed into another prime (113031011167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56515505580 + 56515505581.

It is an arithmetic number, because the mean of its divisors is an integer number (56515505581).

Almost surely, 2^113031011161 is an apocalyptic number.

It is an amenable number.

113031011161 is a deficient number, since it is larger than the sum of its proper divisors (1).

113031011161 is an equidigital number, since it uses as much as digits as its factorization.

113031011161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 19.

Adding to 113031011161 its reverse (161110130311), we get a palindrome (274141141472).

The spelling of 113031011161 in words is "one hundred thirteen billion, thirty-one million, eleven thousand, one hundred sixty-one".