131231022230 has 64 divisors (see below), whose sum is σ = 295186913280. Its totient is φ = 40808169600.

The previous prime is 131231022193. The next prime is 131231022239. The reversal of 131231022230 is 32220132131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131231022239) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 134156 + ... + 529584.

It is an arithmetic number, because the mean of its divisors is an integer number (4612295520).

Almost surely, 2^131231022230 is an apocalyptic number.

131231022230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131231022230 is an abundant number, since it is smaller than the sum of its proper divisors (163955891050).

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

131231022230 is a wasteful number, since it uses less digits than its factorization.

131231022230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395885.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 131231022230 its reverse (32220132131), we get a palindrome (163451154361).

The spelling of 131231022230 in words is "one hundred thirty-one billion, two hundred thirty-one million, twenty-two thousand, two hundred thirty".