113643157 has 2 divisors, whose sum is σ = 113643158. Its totient is φ = 113643156.

The previous prime is 113643151. The next prime is 113643191. The reversal of 113643157 is 751346311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102292996 + 11350161 = 10114^2 + 3369^2 .

It is an emirp because it is prime and its reverse (751346311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113643157 - 2²³ = 105254549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113643151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56821578 + 56821579.

It is an arithmetic number, because the mean of its divisors is an integer number (56821579).

Almost surely, 2^113643157 is an apocalyptic number.

It is an amenable number.

113643157 is a deficient number, since it is larger than the sum of its proper divisors (1).

113643157 is an equidigital number, since it uses as much as digits as its factorization.

113643157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 31.

The square root of 113643157 is about 10660.3544500171. The cubic root of 113643157 is about 484.3743049147.

Adding to 113643157 its reverse (751346311), we get a palindrome (864989468).

The spelling of 113643157 in words is "one hundred thirteen million, six hundred forty-three thousand, one hundred fifty-seven".