3431 has 4 divisors (see below), whose sum is σ = 3552. Its totient is φ = 3312.

The previous prime is 3413. The next prime is 3433. The reversal of 3431 is 1343.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1343 = 17 ⋅79.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3431 is a prime.

It is a super-2 number, since 2×3431² = 23543522, 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 (3433) 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, 11 + ... + 83.

It is an arithmetic number, because the mean of its divisors is an integer number (888).

3431 is a deficient number, since it is larger than the sum of its proper divisors (121).

3431 is an equidigital number, since it uses as much as digits as its factorization.

3431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120.

The product of its digits is 36, while the sum is 11.

The square root of 3431 is about 58.5747385824. The cubic root of 3431 is about 15.0825082896.

Adding to 3431 its reverse (1343), we get a palindrome (4774).

It can be divided in two parts, 3 and 431, that added together give a palindrome (434).

The spelling of 3431 in words is "three thousand, four hundred thirty-one".