2120312330 has 16 divisors (see below), whose sum is σ = 3855909960. Its totient is φ = 839380992.

The previous prime is 2120312309. The next prime is 2120312333. The reversal of 2120312330 is 332130212.

It can be written as a sum of positive squares in 4 ways, for example, as 1985682721 + 134629609 = 44561^2 + 11603^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2120312299 and 2120312308.

It is not an unprimeable number, because it can be changed into a prime (2120312333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1091975 + ... + 1093914.

Almost surely, 2^2120312330 is an apocalyptic number.

2120312330 is a deficient number, since it is larger than the sum of its proper divisors (1735597630).

2120312330 is a wasteful number, since it uses less digits than its factorization.

2120312330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2185993.

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

The square root of 2120312330 is about 46046.8492950386. The cubic root of 2120312330 is about 1284.6947409363.

Adding to 2120312330 its reverse (332130212), we get a palindrome (2452442542).

It can be divided in two parts, 21203 and 12330, that added together give a palindrome (33533).

The spelling of 2120312330 in words is "two billion, one hundred twenty million, three hundred twelve thousand, three hundred thirty".