7231140 has 96 divisors (see below), whose sum is σ = 25724160. Its totient is φ = 1651968.

The previous prime is 7231139. The next prime is 7231141. The reversal of 7231140 is 411327.

It is an interprime number because it is at equal distance from previous prime (7231139) and next prime (7231141).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (7231141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2824 + ... + 4736.

It is an arithmetic number, because the mean of its divisors is an integer number (267960).

Almost surely, 2^7231140 is an apocalyptic number.

7231140 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7231140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12862080).

7231140 is an abundant number, since it is smaller than the sum of its proper divisors (18493020).

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

7231140 is a wasteful number, since it uses less digits than its factorization.

7231140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938 (or 1930 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 7231140 is about 2689.0779088751. The cubic root of 7231140 is about 193.3758593201.

Adding to 7231140 its reverse (411327), we get a palindrome (7642467).

The spelling of 7231140 in words is "seven million, two hundred thirty-one thousand, one hundred forty".