30231102311220 has 96 divisors (see below), whose sum is σ = 85461699552768. Its totient is φ = 7984086567552.

The previous prime is 30231102311197. The next prime is 30231102311257. The reversal of 30231102311220 is 2211320113203.

It is a super-3 number, since 3×30231102311220³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22741767 + ... + 24034353.

It is an arithmetic number, because the mean of its divisors is an integer number (890226037008).

Almost surely, 2^{30231102311220} is an apocalyptic number.

30231102311220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30231102311220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42730849776384).

30231102311220 is an abundant number, since it is smaller than the sum of its proper divisors (55230597241548).

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

30231102311220 is a wasteful number, since it uses less digits than its factorization.

30231102311220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296349 (or 1296347 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 30231102311220 its reverse (2211320113203), we get a palindrome (32442422424423).

The spelling of 30231102311220 in words is "thirty trillion, two hundred thirty-one billion, one hundred two million, three hundred eleven thousand, two hundred twenty".