231103313011220 has 24 divisors (see below), whose sum is σ = 522649030964424. Its totient is φ = 85330454034816.

The previous prime is 231103313011199. The next prime is 231103313011243. The reversal of 231103313011220 is 22110313301132.

231103313011220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1906906904464 + 229196406106756 = 1380908^2 + 15139234^2 .

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, 444429447839 + ... + 444429448358.

It is an arithmetic number, because the mean of its divisors is an integer number (21777042956851).

Almost surely, 2^{231103313011220} is an apocalyptic number.

231103313011220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231103313011220 is an abundant number, since it is smaller than the sum of its proper divisors (291545717953204).

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

231103313011220 is a wasteful number, since it uses less digits than its factorization.

231103313011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888858896219 (or 888858896217 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 231103313011220 its reverse (22110313301132), we get a palindrome (253213626312352).

The spelling of 231103313011220 in words is "two hundred thirty-one trillion, one hundred three billion, three hundred thirteen million, eleven thousand, two hundred twenty".