30141812 has 12 divisors (see below), whose sum is σ = 52976196. Its totient is φ = 15005760.

The previous prime is 30141803. The next prime is 30141821. The reversal of 30141812 is 21814103.

It is an interprime number because it is at equal distance from previous prime (30141803) and next prime (30141821).

It can be written as a sum of positive squares in 2 ways, for example, as 4477456 + 25664356 = 2116^2 + 5066^2 .

It is a super-4 number, since 4×30141812⁴ (a number of 31 digits) contains 4444 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15239 + ... + 17102.

It is an arithmetic number, because the mean of its divisors is an integer number (4414683).

Almost surely, 2^30141812 is an apocalyptic number.

It is an amenable number.

30141812 is a deficient number, since it is larger than the sum of its proper divisors (22834384).

30141812 is a wasteful number, since it uses less digits than its factorization.

30141812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32578 (or 32576 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 30141812 is about 5490.1559176402. The cubic root of 30141812 is about 311.2120843262.

Adding to 30141812 its reverse (21814103), we get a palindrome (51955915).

The spelling of 30141812 in words is "thirty million, one hundred forty-one thousand, eight hundred twelve".