235306139 has 2 divisors, whose sum is σ = 235306140. Its totient is φ = 235306138.

The previous prime is 235306133. The next prime is 235306193. The reversal of 235306139 is 931603532.

Together with next prime (235306193) 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 235306139 - 2⁸ = 235305883 is a prime.

It is not a weakly prime, because it can be changed into another prime (235306133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117653069 + 117653070.

It is an arithmetic number, because the mean of its divisors is an integer number (117653070).

Almost surely, 2^235306139 is an apocalyptic number.

235306139 is a deficient number, since it is larger than the sum of its proper divisors (1).

235306139 is an equidigital number, since it uses as much as digits as its factorization.

235306139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 32.

The square root of 235306139 is about 15339.6916201076. The cubic root of 235306139 is about 617.3684325793.

The spelling of 235306139 in words is "two hundred thirty-five million, three hundred six thousand, one hundred thirty-nine".