5431782361 has 2 divisors, whose sum is σ = 5431782362. Its totient is φ = 5431782360.

The previous prime is 5431782359. The next prime is 5431782379. The reversal of 5431782361 is 1632871345.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4981536400 + 450245961 = 70580^2 + 21219^2 .

It is a cyclic number.

It is not a de Polignac number, because 5431782361 - 2¹ = 5431782359 is a prime.

Together with 5431782359, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5431782311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2715891180 + 2715891181.

It is an arithmetic number, because the mean of its divisors is an integer number (2715891181).

Almost surely, 2^5431782361 is an apocalyptic number.

It is an amenable number.

5431782361 is a deficient number, since it is larger than the sum of its proper divisors (1).

5431782361 is an equidigital number, since it uses as much as digits as its factorization.

5431782361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The square root of 5431782361 is about 73700.6265984218. The cubic root of 5431782361 is about 1757.8458451460.

The spelling of 5431782361 in words is "five billion, four hundred thirty-one million, seven hundred eighty-two thousand, three hundred sixty-one".