133333333247 has 2 divisors, whose sum is σ = 133333333248. Its totient is φ = 133333333246.

The previous prime is 133333333187. The next prime is 133333333291. The reversal of 133333333247 is 742333333331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133333333247 - 2⁸ = 133333332991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133333333247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133333333447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66666666623 + 66666666624.

It is an arithmetic number, because the mean of its divisors is an integer number (66666666624).

Almost surely, 2^133333333247 is an apocalyptic number.

133333333247 is a deficient number, since it is larger than the sum of its proper divisors (1).

133333333247 is an equidigital number, since it uses as much as digits as its factorization.

133333333247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 38.

Adding to 133333333247 its reverse (742333333331), we get a palindrome (875666666578).

It can be divided in two parts, 13333333324 and 7, that added together give a palindrome (13333333331).

The spelling of 133333333247 in words is "one hundred thirty-three billion, three hundred thirty-three million, three hundred thirty-three thousand, two hundred forty-seven".