2820531230881 has 16 divisors (see below), whose sum is σ = 3622354493184. Its totient is φ = 2134601751744.

The previous prime is 2820531230863. The next prime is 2820531230903. The reversal of 2820531230881 is 1880321350282.

It is not a de Polignac number, because 2820531230881 - 2⁵ = 2820531230849 is a prime.

It is a super-2 number, since 2×2820531230881² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2820531236881) 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, 673798966 + ... + 673803151.

It is an arithmetic number, because the mean of its divisors is an integer number (226397155824).

Almost surely, 2^{2820531230881} is an apocalyptic number.

It is an amenable number.

2820531230881 is a deficient number, since it is larger than the sum of its proper divisors (801823262303).

2820531230881 is a wasteful number, since it uses less digits than its factorization.

2820531230881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347602160.

The product of its (nonzero) digits is 184320, while the sum is 43.

The spelling of 2820531230881 in words is "two trillion, eight hundred twenty billion, five hundred thirty-one million, two hundred thirty thousand, eight hundred eighty-one".