213110312020 has 24 divisors (see below), whose sum is σ = 466989554304. Its totient is φ = 81537858336.

The previous prime is 213110312003. The next prime is 213110312027. The reversal of 213110312020 is 20213011312.

213110312020 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 213110311985 and 213110312003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213110312027) 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, 231641184 + ... + 231642103.

It is an arithmetic number, because the mean of its divisors is an integer number (19457898096).

Almost surely, 2^213110312020 is an apocalyptic number.

213110312020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213110312020 is an abundant number, since it is smaller than the sum of its proper divisors (253879242284).

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

213110312020 is a wasteful number, since it uses less digits than its factorization.

213110312020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463283319 (or 463283317 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 213110312020 its reverse (20213011312), we get a palindrome (233323323332).

The spelling of 213110312020 in words is "two hundred thirteen billion, one hundred ten million, three hundred twelve thousand, twenty".