113240161 has 2 divisors, whose sum is σ = 113240162. Its totient is φ = 113240160.

The previous prime is 113240143. The next prime is 113240167. The reversal of 113240161 is 161042311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57289761 + 55950400 = 7569^2 + 7480^2 .

It is a cyclic number.

It is not a de Polignac number, because 113240161 - 2¹³ = 113231969 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (113240167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56620080 + 56620081.

It is an arithmetic number, because the mean of its divisors is an integer number (56620081).

Almost surely, 2^113240161 is an apocalyptic number.

It is an amenable number.

113240161 is a deficient number, since it is larger than the sum of its proper divisors (1).

113240161 is an equidigital number, since it uses as much as digits as its factorization.

113240161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 113240161 is about 10641.4360403096. The cubic root of 113240161 is about 483.8010716889.

Adding to 113240161 its reverse (161042311), we get a palindrome (274282472).

The spelling of 113240161 in words is "one hundred thirteen million, two hundred forty thousand, one hundred sixty-one".