133332247 has 2 divisors, whose sum is σ = 133332248. Its totient is φ = 133332246.

The previous prime is 133332239. The next prime is 133332257. The reversal of 133332247 is 742233331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133332247 - 2³ = 133332239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133332217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66666123 + 66666124.

It is an arithmetic number, because the mean of its divisors is an integer number (66666124).

Almost surely, 2^133332247 is an apocalyptic number.

133332247 is a deficient number, since it is larger than the sum of its proper divisors (1).

133332247 is an equidigital number, since it uses as much as digits as its factorization.

133332247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 28.

The square root of 133332247 is about 11546.9583440835. The cubic root of 133332247 is about 510.8715674795.

Adding to 133332247 its reverse (742233331), we get a palindrome (875565578).

The spelling of 133332247 in words is "one hundred thirty-three million, three hundred thirty-two thousand, two hundred forty-seven".