3440431 has 4 divisors (see below), whose sum is σ = 3452872. Its totient is φ = 3427992.

The previous prime is 3440429. The next prime is 3440491. The reversal of 3440431 is 1340443.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3440431 - 2¹ = 3440429 is a prime.

It is a super-2 number, since 2×3440431² = 23673130931522, which contains 22 as substring.

It is a Duffinian number.

3440431 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3440399 and 3440408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3440491) 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, 5796 + ... + 6361.

It is an arithmetic number, because the mean of its divisors is an integer number (863218).

Almost surely, 2^3440431 is an apocalyptic number.

3440431 is a deficient number, since it is larger than the sum of its proper divisors (12441).

3440431 is a wasteful number, since it uses less digits than its factorization.

3440431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12440.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 3440431 is about 1854.8398852731. The cubic root of 3440431 is about 150.9631505187.

Adding to 3440431 its reverse (1340443), we get a palindrome (4780874).

The spelling of 3440431 in words is "three million, four hundred forty thousand, four hundred thirty-one".