133215347 has 2 divisors, whose sum is σ = 133215348. Its totient is φ = 133215346.

The previous prime is 133215337. The next prime is 133215353. The reversal of 133215347 is 743512331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133215347 - 2¹⁶ = 133149811 is a prime.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (133215307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66607673 + 66607674.

It is an arithmetic number, because the mean of its divisors is an integer number (66607674).

Almost surely, 2^133215347 is an apocalyptic number.

133215347 is a deficient number, since it is larger than the sum of its proper divisors (1).

133215347 is an equidigital number, since it uses as much as digits as its factorization.

133215347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 29.

The square root of 133215347 is about 11541.8952949678. The cubic root of 133215347 is about 510.7222203919.

Adding to 133215347 its reverse (743512331), we get a palindrome (876727678).

The spelling of 133215347 in words is "one hundred thirty-three million, two hundred fifteen thousand, three hundred forty-seven".