423521235287 has 2 divisors, whose sum is σ = 423521235288. Its totient is φ = 423521235286.

The previous prime is 423521235271. The next prime is 423521235317. The reversal of 423521235287 is 782532125324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423521235287 - 2⁴ = 423521235271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423521285287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211760617643 + 211760617644.

It is an arithmetic number, because the mean of its divisors is an integer number (211760617644).

Almost surely, 2^423521235287 is an apocalyptic number.

423521235287 is a deficient number, since it is larger than the sum of its proper divisors (1).

423521235287 is an equidigital number, since it uses as much as digits as its factorization.

423521235287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 806400, while the sum is 44.

The spelling of 423521235287 in words is "four hundred twenty-three billion, five hundred twenty-one million, two hundred thirty-five thousand, two hundred eighty-seven".