5431813 has 2 divisors, whose sum is σ = 5431814. Its totient is φ = 5431812.

The previous prime is 5431807. The next prime is 5431817. The reversal of 5431813 is 3181345.

5431813 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3452164 + 1979649 = 1858^2 + 1407^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5431813 is a prime.

5431813 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5431817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2715906 + 2715907.

It is an arithmetic number, because the mean of its divisors is an integer number (2715907).

Almost surely, 2^5431813 is an apocalyptic number.

It is an amenable number.

5431813 is a deficient number, since it is larger than the sum of its proper divisors (1).

5431813 is an equidigital number, since it uses as much as digits as its factorization.

5431813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 25.

The square root of 5431813 is about 2330.6250234647. The cubic root of 5431813 is about 175.7849150294.

The spelling of 5431813 in words is "five million, four hundred thirty-one thousand, eight hundred thirteen".