231300013220 has 24 divisors (see below), whose sum is σ = 486026816184. Its totient is φ = 92463474176.

The previous prime is 231300013211. The next prime is 231300013223. The reversal of 231300013220 is 22310003132.

231300013220 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 3648884836 + 227651128384 = 60406^2 + 477128^2 .

It is a super-2 number, since 2×231300013220² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231300013223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3499637 + ... + 3565116.

It is an arithmetic number, because the mean of its divisors is an integer number (20251117341).

Almost surely, 2^231300013220 is an apocalyptic number.

231300013220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231300013220 is an abundant number, since it is smaller than the sum of its proper divisors (254726802964).

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

231300013220 is a wasteful number, since it uses less digits than its factorization.

231300013220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7066399 (or 7066397 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 231300013220 its reverse (22310003132), we get a palindrome (253610016352).

The spelling of 231300013220 in words is "two hundred thirty-one billion, three hundred million, thirteen thousand, two hundred twenty".