131223020212 has 48 divisors (see below), whose sum is σ = 249596282880. Its totient is φ = 60135804000.

The previous prime is 131223020209. The next prime is 131223020219. The reversal of 131223020212 is 212020322131.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 131223020212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131223020219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11894643 + ... + 11905669.

It is an arithmetic number, because the mean of its divisors is an integer number (5199922560).

Almost surely, 2^131223020212 is an apocalyptic number.

It is an amenable number.

131223020212 is a deficient number, since it is larger than the sum of its proper divisors (118373262668).

131223020212 is a wasteful number, since it uses less digits than its factorization.

131223020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16132 (or 16130 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 131223020212 its reverse (212020322131), we get a palindrome (343243342343).

The spelling of 131223020212 in words is "one hundred thirty-one billion, two hundred twenty-three million, twenty thousand, two hundred twelve".