7131040 has 48 divisors (see below), whose sum is σ = 19256832. Its totient is φ = 2444544.

The previous prime is 7131037. The next prime is 7131049. The reversal of 7131040 is 401317.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7131049) 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, 2064 + ... + 4303.

It is an arithmetic number, because the mean of its divisors is an integer number (401184).

Almost surely, 2^7131040 is an apocalyptic number.

7131040 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7131040 is an abundant number, since it is smaller than the sum of its proper divisors (12125792).

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

7131040 is a wasteful number, since it uses less digits than its factorization.

7131040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6389 (or 6381 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 7131040 is about 2670.4007189933. The cubic root of 7131040 is about 192.4794153510.

Adding to 7131040 its reverse (401317), we get a palindrome (7532357).

The spelling of 7131040 in words is "seven million, one hundred thirty-one thousand, forty".