2123130331 has 4 divisors (see below), whose sum is σ = 2426434672. Its totient is φ = 1819825992.

The previous prime is 2123130329. The next prime is 2123130379. The reversal of 2123130331 is 1330313212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2123130331 - 2¹ = 2123130329 is a prime.

It is a super-2 number, since 2×2123130331² = 9015364804824339122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2123130299 and 2123130308.

It is not an unprimeable number, because it can be changed into a prime (2123130131) 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 3 ways as a sum of consecutive naturals, for example, 151652160 + ... + 151652173.

It is an arithmetic number, because the mean of its divisors is an integer number (606608668).

Almost surely, 2^2123130331 is an apocalyptic number.

2123130331 is a deficient number, since it is larger than the sum of its proper divisors (303304341).

2123130331 is an equidigital number, since it uses as much as digits as its factorization.

2123130331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303304340.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 2123130331 is about 46077.4384162141. The cubic root of 2123130331 is about 1285.2636301445.

Adding to 2123130331 its reverse (1330313212), we get a palindrome (3453443543).

The spelling of 2123130331 in words is "two billion, one hundred twenty-three million, one hundred thirty thousand, three hundred thirty-one".