131223221013 has 8 divisors (see below), whose sum is σ = 175690288576. Its totient is φ = 87119150400.

The previous prime is 131223220963. The next prime is 131223221027. The reversal of 131223221013 is 310122322131.

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

It is not a de Polignac number, because 131223221013 - 2¹⁰ = 131223219989 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 (131223221413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90748393 + ... + 90749838.

It is an arithmetic number, because the mean of its divisors is an integer number (21961286072).

Almost surely, 2^131223221013 is an apocalyptic number.

It is an amenable number.

131223221013 is a deficient number, since it is larger than the sum of its proper divisors (44467067563).

131223221013 is a wasteful number, since it uses less digits than its factorization.

131223221013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181498475.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 131223221013 its reverse (310122322131), we get a palindrome (441345543144).

The spelling of 131223221013 in words is "one hundred thirty-one billion, two hundred twenty-three million, two hundred twenty-one thousand, thirteen".