133215239 has 2 divisors, whose sum is σ = 133215240. Its totient is φ = 133215238.

The previous prime is 133215227. The next prime is 133215293. The reversal of 133215239 is 932512331.

Together with next prime (133215293) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133215239 - 2⁴ = 133215223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133215209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66607619 + 66607620.

It is an arithmetic number, because the mean of its divisors is an integer number (66607620).

Almost surely, 2^133215239 is an apocalyptic number.

133215239 is a deficient number, since it is larger than the sum of its proper divisors (1).

133215239 is an equidigital number, since it uses as much as digits as its factorization.

133215239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 29.

The square root of 133215239 is about 11541.8906163592. The cubic root of 133215239 is about 510.7220823747.

The spelling of 133215239 in words is "one hundred thirty-three million, two hundred fifteen thousand, two hundred thirty-nine".