728271810231 has 16 divisors (see below), whose sum is σ = 1109815872768. Its totient is φ = 416129688000.

The previous prime is 728271810151. The next prime is 728271810269. The reversal of 728271810231 is 132018172827.

It is not a de Polignac number, because 728271810231 - 2²² = 728267615927 is a prime.

It is a super-2 number, since 2×728271810231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728271811231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 716245 + ... + 1403406.

It is an arithmetic number, because the mean of its divisors is an integer number (69363492048).

Almost surely, 2^728271810231 is an apocalyptic number.

728271810231 is a deficient number, since it is larger than the sum of its proper divisors (381544062537).

728271810231 is a wasteful number, since it uses less digits than its factorization.

728271810231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136022.

The product of its (nonzero) digits is 75264, while the sum is 42.

The spelling of 728271810231 in words is "seven hundred twenty-eight billion, two hundred seventy-one million, eight hundred ten thousand, two hundred thirty-one".