303142213 has 4 divisors (see below), whose sum is σ = 330700608. Its totient is φ = 275583820.

The previous prime is 303142199. The next prime is 303142219. The reversal of 303142213 is 312241303.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 312241303 = 11 ⋅28385573.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-303142213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303142219) 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 3 ways as a sum of consecutive naturals, for example, 13779181 + ... + 13779202.

It is an arithmetic number, because the mean of its divisors is an integer number (82675152).

Almost surely, 2^303142213 is an apocalyptic number.

It is an amenable number.

303142213 is a deficient number, since it is larger than the sum of its proper divisors (27558395).

303142213 is a wasteful number, since it uses less digits than its factorization.

303142213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27558394.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 303142213 is about 17410.9796680141. The cubic root of 303142213 is about 671.7620604193.

Adding to 303142213 its reverse (312241303), we get a palindrome (615383516).

The spelling of 303142213 in words is "three hundred three million, one hundred forty-two thousand, two hundred thirteen".