201247331 has 2 divisors, whose sum is σ = 201247332. Its totient is φ = 201247330.

The previous prime is 201247303. The next prime is 201247351. The reversal of 201247331 is 133742102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201247331 - 2²² = 197053027 is a prime.

It is a super-2 number, since 2×201247331² = 81000976469247122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 201247297 and 201247306.

It is not a weakly prime, because it can be changed into another prime (201247351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100623665 + 100623666.

It is an arithmetic number, because the mean of its divisors is an integer number (100623666).

Almost surely, 2^201247331 is an apocalyptic number.

201247331 is a deficient number, since it is larger than the sum of its proper divisors (1).

201247331 is an equidigital number, since it uses as much as digits as its factorization.

201247331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 201247331 is about 14186.1668889098. The cubic root of 201247331 is about 586.0167683041.

Adding to 201247331 its reverse (133742102), we get a palindrome (334989433).

The spelling of 201247331 in words is "two hundred one million, two hundred forty-seven thousand, three hundred thirty-one".