30312030 has 128 divisors (see below), whose sum is σ = 89579520. Its totient is φ = 6410880.

The previous prime is 30312013. The next prime is 30312053. The reversal of 30312030 is 3021303.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30311997 and 30312015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 283237 + ... + 283343.

It is an arithmetic number, because the mean of its divisors is an integer number (699840).

Almost surely, 2^30312030 is an apocalyptic number.

30312030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30312030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44789760).

30312030 is an abundant number, since it is smaller than the sum of its proper divisors (59267490).

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

30312030 is a wasteful number, since it uses less digits than its factorization.

30312030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214.

The product of its (nonzero) digits is 54, while the sum is 12.

The square root of 30312030 is about 5505.6362030196. The cubic root of 30312030 is about 311.7968146172.

Adding to 30312030 its reverse (3021303), we get a palindrome (33333333).

The spelling of 30312030 in words is "thirty million, three hundred twelve thousand, thirty".