303223013 has 2 divisors, whose sum is σ = 303223014. Its totient is φ = 303223012.

The previous prime is 303223001. The next prime is 303223021. The reversal of 303223013 is 310322303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235868164 + 67354849 = 15358^2 + 8207^2 .

It is a cyclic number.

It is not a de Polignac number, because 303223013 - 2¹⁸ = 302960869 is a prime.

It is a super-2 number, since 2×303223013² = 183888391225596338, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 303222982 and 303223000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (303123013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151611506 + 151611507.

It is an arithmetic number, because the mean of its divisors is an integer number (151611507).

Almost surely, 2^303223013 is an apocalyptic number.

It is an amenable number.

303223013 is a deficient number, since it is larger than the sum of its proper divisors (1).

303223013 is an equidigital number, since it uses as much as digits as its factorization.

303223013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 303223013 is about 17413.2998883038. The cubic root of 303223013 is about 671.8217392877.

Adding to 303223013 its reverse (310322303), we get a palindrome (613545316).

The spelling of 303223013 in words is "three hundred three million, two hundred twenty-three thousand, thirteen".