30123030 has 32 divisors (see below), whose sum is σ = 82623744. Its totient is φ = 6885216.

The previous prime is 30123019. The next prime is 30123047. The reversal of 30123030 is 3032103.

It is a happy number.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30122997 and 30123015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71512 + ... + 71931.

It is an arithmetic number, because the mean of its divisors is an integer number (2581992).

Almost surely, 2^30123030 is an apocalyptic number.

30123030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30123030 is an abundant number, since it is smaller than the sum of its proper divisors (52500714).

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

30123030 is a wasteful number, since it uses less digits than its factorization.

30123030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143460.

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

The square root of 30123030 is about 5488.4451350086. The cubic root of 30123030 is about 311.1474299531.

Adding to 30123030 its reverse (3032103), we get a palindrome (33155133).

The spelling of 30123030 in words is "thirty million, one hundred twenty-three thousand, thirty".