2231320231 has 8 divisors (see below), whose sum is σ = 2551849344. Its totient is φ = 1911233400.

The previous prime is 2231320219. The next prime is 2231320237. The reversal of 2231320231 is 1320231322.

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 2231320231 - 2⁷ = 2231320103 is a prime.

It is a super-3 number, since 3×2231320231³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2231320199 and 2231320208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231320237) 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, 99685 + ... + 119998.

It is an arithmetic number, because the mean of its divisors is an integer number (318981168).

Almost surely, 2^2231320231 is an apocalyptic number.

2231320231 is a deficient number, since it is larger than the sum of its proper divisors (320529113).

2231320231 is a wasteful number, since it uses less digits than its factorization.

2231320231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221141.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2231320231 is about 47236.8524671151. The cubic root of 2231320231 is about 1306.7343305481.

Adding to 2231320231 its reverse (1320231322), we get a palindrome (3551551553).

The spelling of 2231320231 in words is "two billion, two hundred thirty-one million, three hundred twenty thousand, two hundred thirty-one".