148235309 has 2 divisors, whose sum is σ = 148235310. Its totient is φ = 148235308.

The previous prime is 148235293. The next prime is 148235369. The reversal of 148235309 is 903532841.

148235309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145684900 + 2550409 = 12070^2 + 1597^2 .

It is a cyclic number.

It is not a de Polignac number, because 148235309 - 2⁴ = 148235293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148235369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74117654 + 74117655.

It is an arithmetic number, because the mean of its divisors is an integer number (74117655).

Almost surely, 2^148235309 is an apocalyptic number.

It is an amenable number.

148235309 is a deficient number, since it is larger than the sum of its proper divisors (1).

148235309 is an equidigital number, since it uses as much as digits as its factorization.

148235309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 148235309 is about 12175.1923598767. The cubic root of 148235309 is about 529.2374330666.

The spelling of 148235309 in words is "one hundred forty-eight million, two hundred thirty-five thousand, three hundred nine".