2443431 has 4 divisors (see below), whose sum is σ = 3257912. Its totient is φ = 1628952.

The previous prime is 2443429. The next prime is 2443433. The reversal of 2443431 is 1343442.

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

It is an interprime number because it is at equal distance from previous prime (2443429) and next prime (2443433).

It is not a de Polignac number, because 2443431 - 2¹ = 2443429 is a prime.

It is a super-2 number, since 2×2443431² = 11940710103522, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2²¹ + 4⁷ + 4⁸ + 3³ + 4⁹ + 3⁷ + 1 .

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2443398 and 2443407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2443433) 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, 407236 + ... + 407241.

It is an arithmetic number, because the mean of its divisors is an integer number (814478).

2^2443431 is an apocalyptic number.

2443431 is a deficient number, since it is larger than the sum of its proper divisors (814481).

2443431 is an equidigital number, since it uses as much as digits as its factorization.

2443431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814480.

The product of its digits is 1152, while the sum is 21.

The square root of 2443431 is about 1563.1477857196. The cubic root of 2443431 is about 134.6893818766.

Adding to 2443431 its reverse (1343442), we get a palindrome (3786873).

The spelling of 2443431 in words is "two million, four hundred forty-three thousand, four hundred thirty-one".