431780413 has 2 divisors, whose sum is σ = 431780414. Its totient is φ = 431780412.

The previous prime is 431780383. The next prime is 431780441. The reversal of 431780413 is 314087134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 319801689 + 111978724 = 17883^2 + 10582^2 .

It is a cyclic number.

It is not a de Polignac number, because 431780413 - 2⁵ = 431780381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431780213) 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, 215890206 + 215890207.

It is an arithmetic number, because the mean of its divisors is an integer number (215890207).

Almost surely, 2^431780413 is an apocalyptic number.

It is an amenable number.

431780413 is a deficient number, since it is larger than the sum of its proper divisors (1).

431780413 is an equidigital number, since it uses as much as digits as its factorization.

431780413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 431780413 is about 20779.3265771536. The cubic root of 431780413 is about 755.8245238383.

The spelling of 431780413 in words is "four hundred thirty-one million, seven hundred eighty thousand, four hundred thirteen".