30213012 has 48 divisors (see below), whose sum is σ = 77232960. Its totient is φ = 9149952.

The previous prime is 30213011. The next prime is 30213013. The reversal of 30213012 is 21031203.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30213011) and next prime (30213013).

It is a super-2 number, since 2×30213012² = 1825652188224288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30213011) 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 15 ways as a sum of consecutive naturals, for example, 3363 + ... + 8469.

It is an arithmetic number, because the mean of its divisors is an integer number (1609020).

Almost surely, 2^30213012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30213012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38616480).

30213012 is an abundant number, since it is smaller than the sum of its proper divisors (47019948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30213012 is a wasteful number, since it uses less digits than its factorization.

30213012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5160 (or 5158 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 30213012 is about 5496.6364260337. The cubic root of 30213012 is about 311.4569366271.

Adding to 30213012 its reverse (21031203), we get a palindrome (51244215).

The spelling of 30213012 in words is "thirty million, two hundred thirteen thousand, twelve".