431163541 has 2 divisors, whose sum is σ = 431163542. Its totient is φ = 431163540.

The previous prime is 431163521. The next prime is 431163547. The reversal of 431163541 is 145361134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 426257316 + 4906225 = 20646^2 + 2215^2 .

It is a cyclic number.

It is not a de Polignac number, because 431163541 - 2⁷ = 431163413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431163547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215581770 + 215581771.

It is an arithmetic number, because the mean of its divisors is an integer number (215581771).

Almost surely, 2^431163541 is an apocalyptic number.

It is an amenable number.

431163541 is a deficient number, since it is larger than the sum of its proper divisors (1).

431163541 is an equidigital number, since it uses as much as digits as its factorization.

431163541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 28.

The square root of 431163541 is about 20764.4778648537. The cubic root of 431163541 is about 755.4644108536.

The spelling of 431163541 in words is "four hundred thirty-one million, one hundred sixty-three thousand, five hundred forty-one".