523431047 has 2 divisors, whose sum is σ = 523431048. Its totient is φ = 523431046.

The previous prime is 523431043. The next prime is 523431059. The reversal of 523431047 is 740134325.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 523431047 - 2² = 523431043 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523431043) 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, 261715523 + 261715524.

It is an arithmetic number, because the mean of its divisors is an integer number (261715524).

Almost surely, 2^523431047 is an apocalyptic number.

523431047 is a deficient number, since it is larger than the sum of its proper divisors (1).

523431047 is an equidigital number, since it uses as much as digits as its factorization.

523431047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 523431047 is about 22878.6154956982. The cubic root of 523431047 is about 805.9099040966.

The spelling of 523431047 in words is "five hundred twenty-three million, four hundred thirty-one thousand, forty-seven".