28300071831 has 16 divisors (see below), whose sum is σ = 38643775488. Its totient is φ = 18416804000.

The previous prime is 28300071823. The next prime is 28300071857. The reversal of 28300071831 is 13817000382.

It is a cyclic number.

It is not a de Polignac number, because 28300071831 - 2³ = 28300071823 is a prime.

It is a super-2 number, since 2×28300071831² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28300071792 and 28300071801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28300071431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 636231 + ... + 679256.

It is an arithmetic number, because the mean of its divisors is an integer number (2415235968).

Almost surely, 2^28300071831 is an apocalyptic number.

28300071831 is a deficient number, since it is larger than the sum of its proper divisors (10343703657).

28300071831 is a wasteful number, since it uses less digits than its factorization.

28300071831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315662.

The product of its (nonzero) digits is 8064, while the sum is 33.

The spelling of 28300071831 in words is "twenty-eight billion, three hundred million, seventy-one thousand, eight hundred thirty-one".