431780441 has 2 divisors, whose sum is σ = 431780442. Its totient is φ = 431780440.

The previous prime is 431780413. The next prime is 431780519. The reversal of 431780441 is 144087134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 403849216 + 27931225 = 20096^2 + 5285^2 .

It is a cyclic number.

It is not a de Polignac number, because 431780441 - 2¹⁰ = 431779417 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 431780398 and 431780407.

It is not a weakly prime, because it can be changed into another prime (431780641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215890220 + 215890221.

It is an arithmetic number, because the mean of its divisors is an integer number (215890221).

Almost surely, 2^431780441 is an apocalyptic number.

It is an amenable number.

431780441 is a deficient number, since it is larger than the sum of its proper divisors (1).

431780441 is an equidigital number, since it uses as much as digits as its factorization.

431780441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 431780441 is about 20779.3272509001. The cubic root of 431780441 is about 755.8245401762.

The spelling of 431780441 in words is "four hundred thirty-one million, seven hundred eighty thousand, four hundred forty-one".