431997133 has 2 divisors, whose sum is σ = 431997134. Its totient is φ = 431997132.

The previous prime is 431997119. The next prime is 431997143. The reversal of 431997133 is 331799134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 367949124 + 64048009 = 19182^2 + 8003^2 .

It is a cyclic number.

It is not a de Polignac number, because 431997133 - 2¹³ = 431988941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431997143) 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, 215998566 + 215998567.

It is an arithmetic number, because the mean of its divisors is an integer number (215998567).

Almost surely, 2^431997133 is an apocalyptic number.

It is an amenable number.

431997133 is a deficient number, since it is larger than the sum of its proper divisors (1).

431997133 is an equidigital number, since it uses as much as digits as its factorization.

431997133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 40.

The square root of 431997133 is about 20784.5407214112. The cubic root of 431997133 is about 755.9509576213.

The spelling of 431997133 in words is "four hundred thirty-one million, nine hundred ninety-seven thousand, one hundred thirty-three".