2120311231 has 8 divisors (see below), whose sum is σ = 2130901344. Its totient is φ = 2109745920.

The previous prime is 2120311183. The next prime is 2120311241. The reversal of 2120311231 is 1321130212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2120311231 - 2¹⁷ = 2120180159 is a prime.

It is a super-2 number, since 2×2120311231² = 8991439432609470722, 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 (2120311241) 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, 178675 + ... + 190171.

It is an arithmetic number, because the mean of its divisors is an integer number (266362668).

Almost surely, 2^2120311231 is an apocalyptic number.

2120311231 is a deficient number, since it is larger than the sum of its proper divisors (10590113).

2120311231 is a wasteful number, since it uses less digits than its factorization.

2120311231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12401.

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

The square root of 2120311231 is about 46046.8373615387. The cubic root of 2120311231 is about 1284.6945189753.

Adding to 2120311231 its reverse (1321130212), we get a palindrome (3441441443).

The spelling of 2120311231 in words is "two billion, one hundred twenty million, three hundred eleven thousand, two hundred thirty-one".