5431 has 2 divisors, whose sum is σ = 5432.
Its totient is φ = 5430.
The previous prime is 5419. The next prime is 5437. The reversal of 5431 is 1345.
Adding to 5431 its reverse (1345), we get a palindrome (6776).
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 5431 - 25 = 5399 is a prime.
It is a super-2 number, since 2×54312 = 58991522, which contains 22 as substring.
It is a Chen prime.
It is a plaindrome in base 8.
It is a nialpdrome in base 10.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (5437) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2715 + 2716.
It is an arithmetic number, because the mean of its divisors is an integer number (2716).
25431 is an apocalyptic number.
5431 is a deficient number, since it is larger than the sum of its proper divisors (1).
5431 is an equidigital number, since it uses as much as digits as its factorization.
5431 is an evil number, because the sum of its binary digits is even.
The product of its digits is 60, while the sum is 13.
The square root of 5431 is about 73.6953187116.
The cubic root of 5431 is about 17.5776144461.
The spelling of 5431 in words is "five thousand, four hundred thirty-one".