2120320231 has 4 divisors (see below), whose sum is σ = 2120451264. Its totient is φ = 2120189200.

The previous prime is 2120320217. The next prime is 2120320243. The reversal of 2120320231 is 1320230212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120320231 is a prime.

It is a super-2 number, since 2×2120320231² = 8991515763975786722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120320031) 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 3 ways as a sum of consecutive naturals, for example, 37150 + ... + 74971.

It is an arithmetic number, because the mean of its divisors is an integer number (530112816).

Almost surely, 2^2120320231 is an apocalyptic number.

2120320231 is a deficient number, since it is larger than the sum of its proper divisors (131033).

2120320231 is a wasteful number, since it uses less digits than its factorization.

2120320231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131032.

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

The square root of 2120320231 is about 46046.9350880164. The cubic root of 2120320231 is about 1284.6963366698.

Adding to 2120320231 its reverse (1320230212), we get a palindrome (3440550443).

The spelling of 2120320231 in words is "two billion, one hundred twenty million, three hundred twenty thousand, two hundred thirty-one".