428588880807431 has 2 divisors, whose sum is σ = 428588880807432. Its totient is φ = 428588880807430.

The previous prime is 428588880807421. The next prime is 428588880807449. The reversal of 428588880807431 is 134708088885824.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428588880807431 is a prime.

It is a super-3 number, since 3×428588880807431³ (a number of 45 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428588880807421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214294440403715 + 214294440403716.

It is an arithmetic number, because the mean of its divisors is an integer number (214294440403716).

Almost surely, 2^{428588880807431} is an apocalyptic number.

428588880807431 is a deficient number, since it is larger than the sum of its proper divisors (1).

428588880807431 is an equidigital number, since it uses as much as digits as its factorization.

428588880807431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 880803840, while the sum is 74.

The spelling of 428588880807431 in words is "four hundred twenty-eight trillion, five hundred eighty-eight billion, eight hundred eighty million, eight hundred seven thousand, four hundred thirty-one".