3431345 has 4 divisors (see below), whose sum is σ = 4117620. Its totient is φ = 2745072.

The previous prime is 3431333. The next prime is 3431353. The reversal of 3431345 is 5431343.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5431343 = 1223 ⋅4441.

It can be written as a sum of positive squares in 2 ways, for example, as 1437601 + 1993744 = 1199^2 + 1412^2 .

It is a cyclic number.

It is not a de Polignac number, because 3431345 - 2⁸ = 3431089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3431345.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343130 + ... + 343139.

It is an arithmetic number, because the mean of its divisors is an integer number (1029405).

Almost surely, 2^3431345 is an apocalyptic number.

It is an amenable number.

3431345 is a deficient number, since it is larger than the sum of its proper divisors (686275).

3431345 is an equidigital number, since it uses as much as digits as its factorization.

3431345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686274.

The product of its digits is 2160, while the sum is 23.

The square root of 3431345 is about 1852.3889980239. The cubic root of 3431345 is about 150.8301380708.

Adding to 3431345 its reverse (5431343), we get a palindrome (8862688).

The spelling of 3431345 in words is "three million, four hundred thirty-one thousand, three hundred forty-five".