4231540 has 24 divisors (see below), whose sum is σ = 9273600. Its totient is φ = 1618848.

The previous prime is 4231537. The next prime is 4231541. The reversal of 4231540 is 451324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4231541) 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, 4140 + ... + 5059.

It is an arithmetic number, because the mean of its divisors is an integer number (386400).

Almost surely, 2^4231540 is an apocalyptic number.

It is an amenable number.

4231540 is an abundant number, since it is smaller than the sum of its proper divisors (5042060).

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

4231540 is a wasteful number, since it uses less digits than its factorization.

4231540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9231 (or 9229 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 4231540 is about 2057.0707328626. The cubic root of 4231540 is about 161.7457272047.

Adding to 4231540 its reverse (451324), we get a palindrome (4682864).

The spelling of 4231540 in words is "four million, two hundred thirty-one thousand, five hundred forty".