131021230212 has 60 divisors (see below), whose sum is σ = 343502747280. Its totient is φ = 43547845104.

The previous prime is 131021230181. The next prime is 131021230231. The reversal of 131021230212 is 212032120131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 470262 + ... + 695117.

It is an arithmetic number, because the mean of its divisors is an integer number (5725045788).

Almost surely, 2^131021230212 is an apocalyptic number.

131021230212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131021230212 is an abundant number, since it is smaller than the sum of its proper divisors (212481517068).

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

131021230212 is a wasteful number, since it uses less digits than its factorization.

131021230212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165742 (or 1165731 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 131021230212 its reverse (212032120131), we get a palindrome (343053350343).

The spelling of 131021230212 in words is "one hundred thirty-one billion, twenty-one million, two hundred thirty thousand, two hundred twelve".