231030055550 has 96 divisors (see below), whose sum is σ = 496589341248. Its totient is φ = 78326968320.

The previous prime is 231030055541. The next prime is 231030055561. The reversal of 231030055550 is 55550030132.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55574072 + ... + 55578228.

It is an arithmetic number, because the mean of its divisors is an integer number (5172805638).

Almost surely, 2^231030055550 is an apocalyptic number.

231030055550 is an abundant number, since it is smaller than the sum of its proper divisors (265559285698).

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

231030055550 is a wasteful number, since it uses less digits than its factorization.

231030055550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5910 (or 5905 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 29.

Adding to 231030055550 its reverse (55550030132), we get a palindrome (286580085682).

The spelling of 231030055550 in words is "two hundred thirty-one billion, thirty million, fifty-five thousand, five hundred fifty".