131223220213 has 8 divisors (see below), whose sum is σ = 131367379968. Its totient is φ = 131079106704.

The previous prime is 131223220171. The next prime is 131223220217. The reversal of 131223220213 is 312022322131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131223220213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131223220217) 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 7 ways as a sum of consecutive naturals, for example, 10800420 + ... + 10812562.

It is an arithmetic number, because the mean of its divisors is an integer number (16420922496).

Almost surely, 2^131223220213 is an apocalyptic number.

It is an amenable number.

131223220213 is a deficient number, since it is larger than the sum of its proper divisors (144159755).

131223220213 is a wasteful number, since it uses less digits than its factorization.

131223220213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23123.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 131223220213 its reverse (312022322131), we get a palindrome (443245542344).

The spelling of 131223220213 in words is "one hundred thirty-one billion, two hundred twenty-three million, two hundred twenty thousand, two hundred thirteen".