30351213 has 8 divisors (see below), whose sum is σ = 44964800. Its totient is φ = 20234124.

The previous prime is 30351179. The next prime is 30351257. The reversal of 30351213 is 31215303.

It is not a de Polignac number, because 30351213 - 2¹² = 30347117 is a prime.

It is a super-2 number, since 2×30351213² = 1842392261142738, 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 (30356213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562033 + ... + 562086.

It is an arithmetic number, because the mean of its divisors is an integer number (5620600).

Almost surely, 2^30351213 is an apocalyptic number.

It is an amenable number.

30351213 is a deficient number, since it is larger than the sum of its proper divisors (14613587).

30351213 is a wasteful number, since it uses less digits than its factorization.

30351213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124128 (or 1124122 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 30351213 is about 5509.1934981447. The cubic root of 30351213 is about 311.9311053502.

Adding to 30351213 its reverse (31215303), we get a palindrome (61566516).

The spelling of 30351213 in words is "thirty million, three hundred fifty-one thousand, two hundred thirteen".