2305213231 has 4 divisors (see below), whose sum is σ = 2307588264. Its totient is φ = 2302838200.

The previous prime is 2305213213. The next prime is 2305213279. The reversal of 2305213231 is 1323125032.

2305213231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-2305213231 is a prime.

It is a super-2 number, since 2×2305213231² = 10628016080754918722, 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 (2305216231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1186060 + ... + 1188001.

It is an arithmetic number, because the mean of its divisors is an integer number (576897066).

Almost surely, 2^2305213231 is an apocalyptic number.

2305213231 is a deficient number, since it is larger than the sum of its proper divisors (2375033).

2305213231 is an equidigital number, since it uses as much as digits as its factorization.

2305213231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375032.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 2305213231 is about 48012.6361596611. The cubic root of 2305213231 is about 1321.0026876105.

Adding to 2305213231 its reverse (1323125032), we get a palindrome (3628338263).

The spelling of 2305213231 in words is "two billion, three hundred five million, two hundred thirteen thousand, two hundred thirty-one".