113203157 has 2 divisors, whose sum is σ = 113203158. Its totient is φ = 113203156.

The previous prime is 113203109. The next prime is 113203163. The reversal of 113203157 is 751302311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58354321 + 54848836 = 7639^2 + 7406^2 .

It is a cyclic number.

It is not a de Polignac number, because 113203157 - 2⁶ = 113203093 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113206157) 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, 56601578 + 56601579.

It is an arithmetic number, because the mean of its divisors is an integer number (56601579).

Almost surely, 2^113203157 is an apocalyptic number.

It is an amenable number.

113203157 is a deficient number, since it is larger than the sum of its proper divisors (1).

113203157 is an equidigital number, since it uses as much as digits as its factorization.

113203157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 113203157 is about 10639.6972231356. The cubic root of 113203157 is about 483.7483679923.

Adding to 113203157 its reverse (751302311), we get a palindrome (864505468).

The spelling of 113203157 in words is "one hundred thirteen million, two hundred three thousand, one hundred fifty-seven".