8312032240 has 40 divisors (see below), whose sum is σ = 19847792160. Its totient is φ = 3234951936.

The previous prime is 8312032237. The next prime is 8312032247. The reversal of 8312032240 is 422302138.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8312032247) 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, 1401100 + ... + 1407019.

It is an arithmetic number, because the mean of its divisors is an integer number (496194804).

Almost surely, 2^8312032240 is an apocalyptic number.

8312032240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8312032240 is an abundant number, since it is smaller than the sum of its proper divisors (11535759920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8312032240 is a wasteful number, since it uses less digits than its factorization.

8312032240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2808169 (or 2808163 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 8312032240 is about 91170.3473723776. The cubic root of 8312032240 is about 2025.6717572164.

Adding to 8312032240 its reverse (422302138), we get a palindrome (8734334378).

The spelling of 8312032240 in words is "eight billion, three hundred twelve million, thirty-two thousand, two hundred forty".