523230556987 has 2 divisors, whose sum is σ = 523230556988. Its totient is φ = 523230556986.

The previous prime is 523230556957. The next prime is 523230556991. The reversal of 523230556987 is 789655032325.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 523230556987 - 2¹¹ = 523230554939 is a prime.

It is not a weakly prime, because it can be changed into another prime (523230556957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261615278493 + 261615278494.

It is an arithmetic number, because the mean of its divisors is an integer number (261615278494).

Almost surely, 2^523230556987 is an apocalyptic number.

523230556987 is a deficient number, since it is larger than the sum of its proper divisors (1).

523230556987 is an equidigital number, since it uses as much as digits as its factorization.

523230556987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608000, while the sum is 55.

The spelling of 523230556987 in words is "five hundred twenty-three billion, two hundred thirty million, five hundred fifty-six thousand, nine hundred eighty-seven".