231031032231230 has 128 divisors (see below), whose sum is σ = 545772903920640. Its totient is φ = 68217766272000.

The previous prime is 231031032231229. The next prime is 231031032231247. The reversal of 231031032231230 is 32132230130132.

It is a super-2 number, since 2×231031032231230² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231031032231230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 568333250 + ... + 568739610.

It is an arithmetic number, because the mean of its divisors is an integer number (4263850811880).

Almost surely, 2^{231031032231230} is an apocalyptic number.

231031032231230 is an abundant number, since it is smaller than the sum of its proper divisors (314741871689410).

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

231031032231230 is a wasteful number, since it uses less digits than its factorization.

231031032231230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445266.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 231031032231230 its reverse (32132230130132), we get a palindrome (263163262361362).

The spelling of 231031032231230 in words is "two hundred thirty-one trillion, thirty-one billion, thirty-two million, two hundred thirty-one thousand, two hundred thirty".