3440442431 has 4 divisors (see below), whose sum is σ = 3440984664. Its totient is φ = 3439900200.

The previous prime is 3440442413. The next prime is 3440442443. The reversal of 3440442431 is 1342440443.

It is a happy number.

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 3440442431 - 2⁶ = 3440442367 is a prime.

It is a super-2 number, since 2×3440442431² = 23673288242050379522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3440442394 and 3440442403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3440442451) 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, 261485 + ... + 274326.

It is an arithmetic number, because the mean of its divisors is an integer number (860246166).

Almost surely, 2^3440442431 is an apocalyptic number.

3440442431 is a deficient number, since it is larger than the sum of its proper divisors (542233).

3440442431 is an equidigital number, since it uses as much as digits as its factorization.

3440442431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542232.

The product of its (nonzero) digits is 18432, while the sum is 29.

The square root of 3440442431 is about 58655.2847661658. The cubic root of 3440442431 is about 1509.6331771263.

Adding to 3440442431 its reverse (1342440443), we get a palindrome (4782882874).

The spelling of 3440442431 in words is "three billion, four hundred forty million, four hundred forty-two thousand, four hundred thirty-one".