3431005 has 4 divisors (see below), whose sum is σ = 4117212. Its totient is φ = 2744800.

The previous prime is 3430967. The next prime is 3431009. The reversal of 3431005 is 5001343.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2442969 + 988036 = 1563^2 + 994^2 .

It is not a de Polignac number, because 3431005 - 2⁷ = 3430877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3431005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3431009) 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, 343096 + ... + 343105.

It is an arithmetic number, because the mean of its divisors is an integer number (1029303).

Almost surely, 2^3431005 is an apocalyptic number.

It is an amenable number.

3431005 is a deficient number, since it is larger than the sum of its proper divisors (686207).

3431005 is an equidigital number, since it uses as much as digits as its factorization.

3431005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686206.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 3431005 is about 1852.2972223701. The cubic root of 3431005 is about 150.8251561623.

Adding to 3431005 its reverse (5001343), we get a palindrome (8432348).

The spelling of 3431005 in words is "three million, four hundred thirty-one thousand, five".