203043157 has 2 divisors, whose sum is σ = 203043158. Its totient is φ = 203043156.

The previous prime is 203043151. The next prime is 203043209. The reversal of 203043157 is 751340302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158407396 + 44635761 = 12586^2 + 6681^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203043157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203043151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101521578 + 101521579.

It is an arithmetic number, because the mean of its divisors is an integer number (101521579).

Almost surely, 2^203043157 is an apocalyptic number.

It is an amenable number.

203043157 is a deficient number, since it is larger than the sum of its proper divisors (1).

203043157 is an equidigital number, since it uses as much as digits as its factorization.

203043157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 203043157 is about 14249.3212820822. The cubic root of 203043157 is about 587.7547114639.

Adding to 203043157 its reverse (751340302), we get a palindrome (954383459).

The spelling of 203043157 in words is "two hundred three million, forty-three thousand, one hundred fifty-seven".