428106563431 has 2 divisors, whose sum is σ = 428106563432. Its totient is φ = 428106563430.

The previous prime is 428106563359. The next prime is 428106563473. The reversal of 428106563431 is 134365601824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428106563431 - 2¹¹ = 428106561383 is a prime.

It is a super-2 number, since 2×428106563431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428106063431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214053281715 + 214053281716.

It is an arithmetic number, because the mean of its divisors is an integer number (214053281716).

Almost surely, 2^428106563431 is an apocalyptic number.

428106563431 is a deficient number, since it is larger than the sum of its proper divisors (1).

428106563431 is an equidigital number, since it uses as much as digits as its factorization.

428106563431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 428106563431 in words is "four hundred twenty-eight billion, one hundred six million, five hundred sixty-three thousand, four hundred thirty-one".