201531203 has 2 divisors, whose sum is σ = 201531204. Its totient is φ = 201531202.

The previous prime is 201531199. The next prime is 201531227. The reversal of 201531203 is 302135102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201531203 - 2² = 201531199 is a prime.

It is a super-2 number, since 2×201531203² = 81229651565254418, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201531293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100765601 + 100765602.

It is an arithmetic number, because the mean of its divisors is an integer number (100765602).

Almost surely, 2^201531203 is an apocalyptic number.

201531203 is a deficient number, since it is larger than the sum of its proper divisors (1).

201531203 is an equidigital number, since it uses as much as digits as its factorization.

201531203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 201531203 is about 14196.1686028308. The cubic root of 201531203 is about 586.2921766702.

Adding to 201531203 its reverse (302135102), we get a palindrome (503666305).

The spelling of 201531203 in words is "two hundred one million, five hundred thirty-one thousand, two hundred three".