304293213 has 16 divisors (see below), whose sum is σ = 515205760. Its totient is φ = 173881728.

The previous prime is 304293173. The next prime is 304293239. The reversal of 304293213 is 312392403.

It is a happy number.

It is not a de Polignac number, because 304293213 - 2¹³ = 304285021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304293263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 804820 + ... + 805197.

It is an arithmetic number, because the mean of its divisors is an integer number (32200360).

Almost surely, 2^304293213 is an apocalyptic number.

It is an amenable number.

304293213 is a deficient number, since it is larger than the sum of its proper divisors (210912547).

304293213 is a wasteful number, since it uses less digits than its factorization.

304293213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610033 (or 1610027 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 304293213 is about 17444.0022070625. The cubic root of 304293213 is about 672.6111905994.

The spelling of 304293213 in words is "three hundred four million, two hundred ninety-three thousand, two hundred thirteen".