431475647 has 2 divisors, whose sum is σ = 431475648. Its totient is φ = 431475646.

The previous prime is 431475619. The next prime is 431475683. The reversal of 431475647 is 746574134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 431475647 - 2²⁰ = 430427071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431475347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215737823 + 215737824.

It is an arithmetic number, because the mean of its divisors is an integer number (215737824).

Almost surely, 2^431475647 is an apocalyptic number.

431475647 is a deficient number, since it is larger than the sum of its proper divisors (1).

431475647 is an equidigital number, since it uses as much as digits as its factorization.

431475647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 41.

The square root of 431475647 is about 20771.9918881170. The cubic root of 431475647 is about 755.6466526894.

The spelling of 431475647 in words is "four hundred thirty-one million, four hundred seventy-five thousand, six hundred forty-seven".