131312330301221 has 16 divisors (see below), whose sum is σ = 140726391020544. Its totient is φ = 122207079798144.

The previous prime is 131312330301211. The next prime is 131312330301233. The reversal of 131312330301221 is 122103033213131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131312330301221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131312330301211) 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, 81491276 + ... + 83087018.

It is an arithmetic number, because the mean of its divisors is an integer number (8795399438784).

Almost surely, 2^{131312330301221} is an apocalyptic number.

It is an amenable number.

131312330301221 is a deficient number, since it is larger than the sum of its proper divisors (9414060719323).

131312330301221 is a wasteful number, since it uses less digits than its factorization.

131312330301221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692500.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 131312330301221 its reverse (122103033213131), we get a palindrome (253415363514352).

The spelling of 131312330301221 in words is "one hundred thirty-one trillion, three hundred twelve billion, three hundred thirty million, three hundred one thousand, two hundred twenty-one".