28580532831 has 8 divisors (see below), whose sum is σ = 42341530160. Its totient is φ = 19053688536.

The previous prime is 28580532817. The next prime is 28580532833. The reversal of 28580532831 is 13823508582.

28580532831 is a `hidden beast` number, since 2 + 8 + 5 + 80 + 532 + 8 + 31 = 666.

It is not a de Polignac number, because 28580532831 - 2¹³ = 28580524639 is a prime.

It is a super-2 number, since 2×28580532831² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28580532833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529269100 + ... + 529269153.

It is an arithmetic number, because the mean of its divisors is an integer number (5292691270).

Almost surely, 2^28580532831 is an apocalyptic number.

28580532831 is a deficient number, since it is larger than the sum of its proper divisors (13760997329).

28580532831 is a wasteful number, since it uses less digits than its factorization.

28580532831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058538262 (or 1058538256 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The spelling of 28580532831 in words is "twenty-eight billion, five hundred eighty million, five hundred thirty-two thousand, eight hundred thirty-one".