231328448556 has 48 divisors (see below), whose sum is σ = 544704943104. Its totient is φ = 76404380416.

The previous prime is 231328448551. The next prime is 231328448563. The reversal of 231328448556 is 655844823132.

It is a super-2 number, since 2×231328448556² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231328448499 and 231328448508.

It is not an unprimeable number, because it can be changed into a prime (231328448551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4889245 + ... + 4936331.

It is an arithmetic number, because the mean of its divisors is an integer number (11348019648).

Almost surely, 2^231328448556 is an apocalyptic number.

It is an amenable number.

231328448556 is an abundant number, since it is smaller than the sum of its proper divisors (313376494548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231328448556 is a wasteful number, since it uses less digits than its factorization.

231328448556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50830 (or 50828 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 51.

The spelling of 231328448556 in words is "two hundred thirty-one billion, three hundred twenty-eight million, four hundred forty-eight thousand, five hundred fifty-six".