3431240 has 16 divisors (see below), whose sum is σ = 7720380. Its totient is φ = 1372480.

The previous prime is 3431237. The next prime is 3431243. The reversal of 3431240 is 421343.

It is an interprime number because it is at equal distance from previous prime (3431237) and next prime (3431243).

It can be written as a sum of positive squares in 2 ways, for example, as 3319684 + 111556 = 1822^2 + 334^2 .

It is not an unprimeable number, because it can be changed into a prime (3431243) 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, 42851 + ... + 42930.

Almost surely, 2^3431240 is an apocalyptic number.

It is an amenable number.

3431240 is an abundant number, since it is smaller than the sum of its proper divisors (4289140).

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

3431240 is a wasteful number, since it uses less digits than its factorization.

3431240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85792 (or 85788 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 3431240 is about 1852.3606560279. The cubic root of 3431240 is about 150.8285995754.

Adding to 3431240 its reverse (421343), we get a palindrome (3852583).

The spelling of 3431240 in words is "three million, four hundred thirty-one thousand, two hundred forty".