2006431 has 4 divisors (see below), whose sum is σ = 2293072. Its totient is φ = 1719792.

The previous prime is 2006429. The next prime is 2006437. The reversal of 2006431 is 1346002.

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 2006431 - 2¹ = 2006429 is a prime.

It is a super-2 number, since 2×2006431² = 8051530715522, 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 (2006437) 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, 143310 + ... + 143323.

It is an arithmetic number, because the mean of its divisors is an integer number (573268).

2^2006431 is an apocalyptic number.

2006431 is a deficient number, since it is larger than the sum of its proper divisors (286641).

2006431 is an equidigital number, since it uses as much as digits as its factorization.

2006431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286640.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2006431 is about 1416.4854393886. The cubic root of 2006431 is about 126.1270030423.

The spelling of 2006431 in words is "two million, six thousand, four hundred thirty-one".