828730328731 has 4 divisors (see below), whose sum is σ = 829718089200. Its totient is φ = 827742568264.

The previous prime is 828730328717. The next prime is 828730328743. The reversal of 828730328731 is 137823037828.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 828730328731 - 2¹⁹ = 828729804443 is a prime.

It is a super-2 number, since 2×828730328731² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (828730322731) 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 3 ways as a sum of consecutive naturals, for example, 493878976 + ... + 493880653.

It is an arithmetic number, because the mean of its divisors is an integer number (207429522300).

Almost surely, 2^828730328731 is an apocalyptic number.

828730328731 is a deficient number, since it is larger than the sum of its proper divisors (987760469).

828730328731 is an equidigital number, since it uses as much as digits as its factorization.

828730328731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987760468.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 828730328731 in words is "eight hundred twenty-eight billion, seven hundred thirty million, three hundred twenty-eight thousand, seven hundred thirty-one".