30333131220 has 96 divisors (see below), whose sum is σ = 97807159296. Its totient is φ = 6880348800.

The previous prime is 30333131203. The next prime is 30333131261. The reversal of 30333131220 is 2213133303.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 220636 + ... + 330675.

It is an arithmetic number, because the mean of its divisors is an integer number (1018824576).

Almost surely, 2^30333131220 is an apocalyptic number.

30333131220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30333131220 is an abundant number, since it is smaller than the sum of its proper divisors (67474028076).

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

30333131220 is a wasteful number, since it uses less digits than its factorization.

30333131220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551461 (or 551459 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 30333131220 its reverse (2213133303), we get a palindrome (32546264523).

The spelling of 30333131220 in words is "thirty billion, three hundred thirty-three million, one hundred thirty-one thousand, two hundred twenty".