431481553 has 2 divisors, whose sum is σ = 431481554. Its totient is φ = 431481552.

The previous prime is 431481527. The next prime is 431481569. The reversal of 431481553 is 355184134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 397922704 + 33558849 = 19948^2 + 5793^2 .

It is a cyclic number.

It is not a de Polignac number, because 431481553 - 2⁵ = 431481521 is a prime.

It is not a weakly prime, because it can be changed into another prime (431491553) 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, 215740776 + 215740777.

It is an arithmetic number, because the mean of its divisors is an integer number (215740777).

Almost surely, 2^431481553 is an apocalyptic number.

It is an amenable number.

431481553 is a deficient number, since it is larger than the sum of its proper divisors (1).

431481553 is an equidigital number, since it uses as much as digits as its factorization.

431481553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 34.

The square root of 431481553 is about 20772.1340502126. The cubic root of 431481553 is about 755.6501004149.

The spelling of 431481553 in words is "four hundred thirty-one million, four hundred eighty-one thousand, five hundred fifty-three".