2313021220 has 24 divisors (see below), whose sum is σ = 5068534464. Its totient is φ = 884981856.

The previous prime is 2313021211. The next prime is 2313021223. The reversal of 2313021220 is 221203132.

It is a junction number, because it is equal to n+sod(n) for n = 2313021194 and 2313021203.

It is not an unprimeable number, because it can be changed into a prime (2313021223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2513694 + ... + 2514613.

It is an arithmetic number, because the mean of its divisors is an integer number (211188936).

Almost surely, 2^2313021220 is an apocalyptic number.

2313021220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2313021220 is an abundant number, since it is smaller than the sum of its proper divisors (2755513244).

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

2313021220 is a wasteful number, since it uses less digits than its factorization.

2313021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5028339 (or 5028337 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2313021220 is about 48093.8792363436. The cubic root of 2313021220 is about 1322.4924631772.

Adding to 2313021220 its reverse (221203132), we get a palindrome (2534224352).

The spelling of 2313021220 in words is "two billion, three hundred thirteen million, twenty-one thousand, two hundred twenty".