3243431 has 4 divisors (see below), whose sum is σ = 3296664. Its totient is φ = 3190200.

The previous prime is 3243397. The next prime is 3243467. The reversal of 3243431 is 1343423.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3243431 is a prime.

It is a super-2 number, since 2×3243431² = 21039689303522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3243131) 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, 26525 + ... + 26646.

It is an arithmetic number, because the mean of its divisors is an integer number (824166).

Almost surely, 2^3243431 is an apocalyptic number.

3243431 is a deficient number, since it is larger than the sum of its proper divisors (53233).

3243431 is an equidigital number, since it uses as much as digits as its factorization.

3243431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53232.

The product of its digits is 864, while the sum is 20.

The square root of 3243431 is about 1800.9528033794. The cubic root of 3243431 is about 148.0249379696.

Adding to 3243431 its reverse (1343423), we get a palindrome (4586854).

The spelling of 3243431 in words is "three million, two hundred forty-three thousand, four hundred thirty-one".