2311320231 has 32 divisors (see below), whose sum is σ = 3739491840. Its totient is φ = 1399291200.

The previous prime is 2311320211. The next prime is 2311320241. The reversal of 2311320231 is 1320231132.

2311320231 is a `hidden beast` number, since 2 + 311 + 320 + 2 + 31 = 666.

It is not a de Polignac number, because 2311320231 - 2⁵ = 2311320199 is a prime.

It is a super-2 number, since 2×2311320231² = 10684402420459786722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311320211) 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 31 ways as a sum of consecutive naturals, for example, 312051 + ... + 319371.

It is an arithmetic number, because the mean of its divisors is an integer number (116859120).

Almost surely, 2^2311320231 is an apocalyptic number.

2311320231 is a deficient number, since it is larger than the sum of its proper divisors (1428171609).

2311320231 is a wasteful number, since it uses less digits than its factorization.

2311320231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8404 (or 8398 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2311320231 is about 48076.1919353020. The cubic root of 2311320231 is about 1322.1681979875.

Adding to 2311320231 its reverse (1320231132), we get a palindrome (3631551363).

The spelling of 2311320231 in words is "two billion, three hundred eleven million, three hundred twenty thousand, two hundred thirty-one".