303252021 has 12 divisors (see below), whose sum is σ = 438552972. Its totient is φ = 201926976.

The previous prime is 303251999. The next prime is 303252029. The reversal of 303252021 is 120252303.

It can be written as a sum of positive squares in 2 ways, for example, as 268500996 + 34751025 = 16386^2 + 5895^2 .

It is not a de Polignac number, because 303252021 - 2¹⁴ = 303235637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 303251985 and 303252003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303252029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11946 + ... + 27371.

It is an arithmetic number, because the mean of its divisors is an integer number (36546081).

Almost surely, 2^303252021 is an apocalyptic number.

It is an amenable number.

303252021 is a deficient number, since it is larger than the sum of its proper divisors (135300951).

303252021 is a wasteful number, since it uses less digits than its factorization.

303252021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40180 (or 40177 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 303252021 is about 17414.1327949456. The cubic root of 303252021 is about 671.8431620060.

The spelling of 303252021 in words is "three hundred three million, two hundred fifty-two thousand, twenty-one".