31021231222230 has 64 divisors (see below), whose sum is σ = 78854992447680. Its totient is φ = 7783294152704.

The previous prime is 31021231222193. The next prime is 31021231222249. The reversal of 31021231222230 is 3222213212013.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31021231222230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7840809 + ... + 11113988.

It is an arithmetic number, because the mean of its divisors is an integer number (1232109256995).

Almost surely, 2^{31021231222230} is an apocalyptic number.

31021231222230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31021231222230 is an abundant number, since it is smaller than the sum of its proper divisors (47833761225450).

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

31021231222230 is a wasteful number, since it uses less digits than its factorization.

31021231222230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18958033.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31021231222230 its reverse (3222213212013), we get a palindrome (34243444434243).

The spelling of 31021231222230 in words is "thirty-one trillion, twenty-one billion, two hundred thirty-one million, two hundred twenty-two thousand, two hundred thirty".