2421431 has 4 divisors (see below), whose sum is σ = 2428200. Its totient is φ = 2414664.

The previous prime is 2421421. The next prime is 2421439. The reversal of 2421431 is 1341242.

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-2421431 is a prime.

It is a super-2 number, since 2×2421431² = 11726656175522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2816 + ... + 3573.

It is an arithmetic number, because the mean of its divisors is an integer number (607050).

2^2421431 is an apocalyptic number.

2421431 is a deficient number, since it is larger than the sum of its proper divisors (6769).

2421431 is an equidigital number, since it uses as much as digits as its factorization.

2421431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6768.

The product of its digits is 192, while the sum is 17.

The square root of 2421431 is about 1556.0947914571. The cubic root of 2421431 is about 134.2839268231.

Adding to 2421431 its reverse (1341242), we get a palindrome (3762673).

The spelling of 2421431 in words is "two million, four hundred twenty-one thousand, four hundred thirty-one".