30123323220 has 24 divisors (see below), whose sum is σ = 84345305184. Its totient is φ = 8032886176.

The previous prime is 30123323201. The next prime is 30123323233. The reversal of 30123323220 is 2232332103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251027634 + ... + 251027753.

It is an arithmetic number, because the mean of its divisors is an integer number (3514387716).

Almost surely, 2^30123323220 is an apocalyptic number.

30123323220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30123323220 is an abundant number, since it is smaller than the sum of its proper divisors (54221981964).

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

30123323220 is a wasteful number, since it uses less digits than its factorization.

30123323220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502055399 (or 502055397 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 30123323220 its reverse (2232332103), we get a palindrome (32355655323).

The spelling of 30123323220 in words is "thirty billion, one hundred twenty-three million, three hundred twenty-three thousand, two hundred twenty".