305362213 has 6 divisors (see below), whose sum is σ = 330658674. Its totient is φ = 281872656.

The previous prime is 305362181. The next prime is 305362223. The reversal of 305362213 is 312263503.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 14386849 + 290975364 = 3793^2 + 17058^2 .

It is not a de Polignac number, because 305362213 - 2⁵ = 305362181 is a prime.

It is a super-2 number, since 2×305362213² = 186492162256514738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305362223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 903270 + ... + 903607.

It is an arithmetic number, because the mean of its divisors is an integer number (55109779).

Almost surely, 2^305362213 is an apocalyptic number.

It is an amenable number.

305362213 is a deficient number, since it is larger than the sum of its proper divisors (25296461).

305362213 is a wasteful number, since it uses less digits than its factorization.

305362213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806903 (or 1806890 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 305362213 is about 17474.6162475747. The cubic root of 305362213 is about 673.3979109768.

The spelling of 305362213 in words is "three hundred five million, three hundred sixty-two thousand, two hundred thirteen".