305140235 has 4 divisors (see below), whose sum is σ = 366168288. Its totient is φ = 244112184.

The previous prime is 305140211. The next prime is 305140243. The reversal of 305140235 is 532041503.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 305140235 - 2²⁶ = 238031371 is a prime.

It is a super-2 number, since 2×305140235² = 186221126031710450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 305140235.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30514019 + ... + 30514028.

It is an arithmetic number, because the mean of its divisors is an integer number (91542072).

Almost surely, 2^305140235 is an apocalyptic number.

305140235 is a deficient number, since it is larger than the sum of its proper divisors (61028053).

305140235 is an equidigital number, since it uses as much as digits as its factorization.

305140235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61028052.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 305140235 is about 17468.2636515482. The cubic root of 305140235 is about 673.2346996054.

Adding to 305140235 its reverse (532041503), we get a palindrome (837181738).

The spelling of 305140235 in words is "three hundred five million, one hundred forty thousand, two hundred thirty-five".